“How to Start Solar Energy Business”
Comment Page 3

  • Carl Jones said on November 30, 2011
    I am a engineering graduate 10 years experience. I am from Edinburgh ,Scotland. I want to start solar energy business please send details along with financial details of solar cell business
  • S Prasanna said on December 3, 2011
    Hi I am very interested in starting a Business on Solar energy at Chennai. Need a guidance to take it forward. I am very much interested
  • Sunil said on December 7, 2011
    I am from Dharwar, Karnataka, India, I looking for franchise/ Distributorship for good government approved manufactures details,please provide me the details.
  • mahmood said on December 7, 2011
    hi! i am living in Gujranwala Pakistan, i want to know if i could start my solar panel business here because i dont know whether it is allowed by the Govt here pr not?...thanks
  • Mr David Nnanna said on December 7, 2011
    Where is the training taken plc in Nigeria and how can one start here in Nigeria
  • John Njuguna said on December 8, 2011
    I am from Kenya, Nairobi. I am so much interested in conservation of the environment and would like to start this business not only for profits but to educate the society on alternative energy sources. i would appreciate more information and guidelines on how to start this business. thanks for such a powerful idea.
  • chinnari santosh kumar said on December 8, 2011
    I am santosh kumar i am from the parvathipuram and i need to know about the solar energy and the solar energy system in India and how to fit a solar plate in the house or in the office and its mechanical thank you sir please help me sir
  • nitin verma said on December 8, 2011
    i want to start my new business in a town of haryana. i want to know all the details related to solar energy business and solar energy devices. please guide me the investments and margins about this business. waiting for reply.
  • Mohamed Boiskhan said on December 11, 2011
    I am in Ramnad district and I have 6 acres land I want to know about solar energy and I am very interested in that business please give me details.
  • Padma Krishnamoorthy said on December 12, 2011
    I am in china.. and looking for solar farm consultants and suppliers who can help me set up a 1 MW farm in Puerto Rico.. interested and manufacturers pls contact mickey@marpa.cn
  • Ashu Sanghi said on December 12, 2011
    I m in jaipur (rajasthan)pls suggest to me how I start the solar business in my district. I want work in repairing of solar water heater. How i increase my work in solar industry. I have knowledge in all solar water heater panels.
  • Ashish said on December 15, 2011
    sir i am Ashish Age 39 (Executive MBA ) from Ahmedabad / Gujarat state .. Interested to enter Solar Energy Based Running Equipments for Home Use on a professional basis.. I want to upload Solar Pannels at Home / Cars etc for generating day to day energy on Professional Basis.. sir please Guide me .. And if anyone interested as Venture Investor then please let me know so i can send my Full Details.. Good Day.
  • shrikant kadam said on December 15, 2011
    hi.. i am from Maharashtra. i want start some small scale business,so can u give me some ideas, and how can i get the info.? i want to developed my land in Maharashtra. so please help me thanks.
  • Wasim Javed said on December 18, 2011
    Hi, My name is Wasim Javed,(24) from Lahore, Pakistan. I'm a Computer Systems Engineer, and very keen in starting my own Solar Energy related business with my friends. I have researched on Solar Energy, and its Commercial prospects and have a Business plan. All, I need to know, how you can help me in starting my business. Thanks
  • Charles Chigongono said on December 18, 2011
    Who can supply us with the following materials.
    1. Monocrystalline solar cells
    2. polycrystalline solar cells
    3. Bus wires
    4. Tabbing wire
    And other materials for making solar panels. We have got cash and we are looking for a serious suppliers who can sustain his/her services with us. We want to start making solar panels. contact us: Charles Chigongono, Fish hoek, Cape Town, South Africa. charleschigongono@yahoo.com +27738077549
  • bharath said on December 24, 2011
    I am bharath from trichy, tamil nadu. i am interest in starting solar energy business in trichy so i need where can i get relevant training and details to start business. please reply to me as soon as possible. thank you
  • pradeep roy said on December 28, 2011
    My name is Mr.Roy from Mumbai working in a NYC listed BPO. I did my diploma in electrical engineering. I am keen to start business with least possible investment and to my surprise I found the business of sales and installation of solar panels a good business and manufacturing of cfl. Taking into my education,selling skill and work experience in electrical work I feel would be able to do really well in this type of business. Pleas provide me with necessary guidance at the earliest possible time. I am keen to learn more about business related to renewable resources.
  • Nash said on December 29, 2011
    Wanted Business Partner. I Have a vacant land 100 acres closed to Toronto Ontario Canada , if any one have a project for Solar Farm to setup in Canada or having intention to start the solar related equipments marketing or manufacturing & installing plan in Canada will do as a joint venture or partnership with me. Please note that I can provide any financial support from third party for the Business, I am looking for creative and talented partners and producers who can work and earn, in my partnership, on a part-time or full-time basis!. Initial some investment is require from the partner to see the seriousness. Email: infonash2@gmail.com contact Nash : Tel: 647 892 3325
  • Solar Start Solutions said on January 5, 2012
    To anyone who's seriously interested in starting up a production plant for solar/pv cell and/or module (panel) manufacturing; we are very experienced consultants who have provided manufacturing and machinery knowledge to many investors worldwide. Need advice? Please feel free to send an email anytime.
  • dhana shekaran said on January 6, 2012
    I would like to start a solar power backup business for the independent home. Does it required any permission from govt. Pl. let me know.
  • Iso Waikhom said on January 7, 2012
    With best greeting from my side, I'm from India-state Manipur- district Imphal East, would like to join hand for such interesting and challenging business so if possible kindly lend me your valuable business so that I can at least share some help to explore resource saving energy business, thanks. cont. no. +919862199429
  • vijayanarayanan said on January 9, 2012
    hi, am from kuwait native india tamilnadu, i interest to start small scale power plant like wind power or solar power plant, how can start and how to get the loan for this project please send any ideas, my email id vijayanarayanan01@yahoo.com
  • deepshikha said on January 12, 2012
    i m deepshikha i want to start small scale industry of solar water heater can u please tell me what is the process and costing? and what requirement for starting this business. i'm from pune. maharashtra i'm waiting for your replay.
  • Biju said on January 14, 2012
    Hi, I am interested to know the cost of installing Solar Panels over an area of 1000 sq ft and the average power generated from same.
  • Andrew Newton Mashika said on January 17, 2012
    I live on the island of Zanzibar and also in Dar es salaam on the mainland Tanzania. I would like to begin a solar business as the demand is ever rising due to frequent power cuts,a lot of sunshine and most recently an increase in the electrical tariff by 45%. Kindly could you help me with addresses of solar equipment dealers who can supply affordable solar equipment in light of the low income earners of the third world and also provide financial support to begin this business. You can reach me on andrew_mashika@yahoo.co.uk Thanks and regards, Andrew
  • V R Prabhu said on January 23, 2012
    I want to take franchise for solar power system in Chennai. What are the basic needs for the business including investment capital. Please guide me. Thank You.
  • Vanita Sonawane said on January 24, 2012
    we want to start a business in solar pv and thermal. i want to know rate of govt. buying units? subsidy in % govt. will provide? How much investment is require for solar power (per m/w)? how much investment require in land and Plant/machinery? and also appx return on investment? please email me all details as soon as possible and guidance how to start business?
  • Sumontro said on January 25, 2012
    Hi, I am interested to start trading Solar Products in Middle East and Africa. At present I am placed in Dubai, one of the best trading hub with open economy. Looking for companies who want to setup business here at minimal cost. If interested, please contact: Sumontro (+971 559915388) Regards.
  • Tony Hamid said on January 25, 2012
    Hello This is Tony Hamid from san ramon ca I would like to solar business ,and learn more abut business. Take Care Tony Hamid
  • NARESH Kumar said on January 30, 2012
    Hi, I am based in Delhi and interested to start assembly/manufacturing of solar appliances like lenten, street light of led/cfl for govt supplies in big quantity. Pls guide me how to start this.
  • kim hamilton said on January 31, 2012
    Hello...I'm in Vancouver Canada and would like information on becoming a solar consultant/operating a business. Thanks
  • kumar beginner adviser said on February 3, 2012
    Dear Mr K.SRINIVASA RAO, For a 5 MW grid connected solar plant you need appx. 35 acres land and a capital of appx 65 crs. Regards, Kumar

    mohank51@gmail.com
    Solar Energy Consultant

  • kumar beginner adviser said on February 7, 2012
    Dear Mr Fernando, Solar power business is one of the latest,the uses are less understood by the masses. The scope is very large and if you are dedicated, ready to devote your time and effort you can earn a return of 18 to 20% of your investment. What type of investment plans you have? You can write to me at my email mohank51@gmail.com. Regards, Kumar

    mohank51@gmail.com
    Solar Energy Consultant

  • kumar beginner adviser said on February 7, 2012

    @vinod subhash bedmutha, What are the details you are looking for? Are you interested in investing in power generation or trading of the products?

    mohank51@gmail.com
    Solar Energy Consultant

  • Akash Bais said on February 8, 2012
    Looking for the opportunity in Solar Industry anywhere....6 months experience in solar industry in China (Currently Working), Masters from UK in Renewable Energy, Engineering in Elec & Comm from India.
  • SELVARAJ MUNIYANDI said on February 12, 2012
    I am Basically an Engineer and currently employed in overseas. I am planning for my return. I like to know about solar power for Home power supply business opportunities such as dealership or franchise, etc. I can be contacted at selvaraj_m@sify.com. Thanks, M.Selvaraj.
  • devasagayam said on February 20, 2012
    Please tell me what would be the cost to set up a solar installation for a single home with 2kw which should be adequate for around the clock. Thank you !
  • Anand said on February 20, 2012
    HI! I am interested in starting a Solar Power / related Business in Gujarat. Can U kindly assist with initial ideas and costings for a start up. I am open to PV Manufacuring, Grid Based / Off-Grid etc. Kindly Guide. Warmst Regards anand
  • John Thomas said on February 21, 2012
    Hi, I am interested in this concept of business. Kindly provide me with more information. Also I am from India and would like to carryout this business in Kerala. Please provide me with your contact details also...Regards, John
  • Indrajeet said on February 23, 2012
    Sir i want to start business in india in fuel saving device so i kindly request u to guide me.
  • Vishal said on February 27, 2012
    I want to start business in solar power like sales & service of Solar panels & solar products. Please guide me on how to start & from where i should take training on solar products. Kindly let me know about any business opportunities such as dealership or franchise, etc. I can be contacted at vishalsonone@gmail.com
  • MUNESH said on March 1, 2012
    I am munesh giri,currently student of informatics engineering in Germany.i am originally from nepal.i am highly interested in setting up Solar energy business in my hometown in my own land and i want a good suggestion and hope to meet a better person so we could create things together as my business partner......please email me muneshonline@gmail.com
  • Md. Saiful Islam said on March 2, 2012
    Hi!I am from Comilla, Bangladesh. I am very much interested to start such types of Business. Please provide me related information regarding solar power business.
  • Francis Hor said on March 3, 2012
    Hi, I am from Malaysia, very interested in solar energy business, please contact where to start. Thanks
  • HERBERT said on March 11, 2012
    LAS VEGAS NEVADA, P.O. BOX 70583, 89170. PLEASE SEND ME A PORTFOLIO PROPOSAL & A DESCRIPTION OF SPACE NEEDED, EQUIPMENT FOR UP TO 5 PERSONS & A "HOW-TO" ON INSTALLATION & COST. I WILL WAIT FOR YOUR RESPONSE & THANK YOU FOR YOUR OFFER...............H.D.L.
  • Ravindra said on March 11, 2012
    We are into solar and LED related products manufacturing.Our aim is to manufacture better products especially for villages, at present we have products with better backups and warranty. we would like to help anyone start his business by appointing them as our distributors. No deposit - Minimum Investment. Full support. for more information write to - ivars68@yahoo.com
  • Maxsus Kashung said on March 17, 2012
    Want to start solar energy business in my state (Manipur). Could you please provide more details about initial investment, where to get the products, etc. I am currently base in New Delhi and want basic training providing in Delhi.
  • Rajendren said on March 22, 2012
    I am Basically a SW Engineer and currently employed. I am planning for my future. I like to know about solar power for Home and Small companies power supply business opportunities,So i need where can i get relevant training and details to start business. Please tell me what would be the cost to set up a solar installation for a single home. please reply to me as soon as possible I can be contacted at rajeetce@gmail.com Ph No : +919787307801..Thanking you
  • Dr. Md. Arzu Miah said on March 23, 2012
    I am a Bangladeshi citizen, Energy crises is one of the major problem in our country, So I want to setup solar energy business in our country. Please advise me.
  • James expert adviser said on March 24, 2012

    @Dr. Md. Arzu Miah, I need more details on your plans. Do you want to make devices that produce energy from Sun or mass produce the energy from Sun and sell it to the consumers?

    Jestin James
    Startup Biz Hub - Senior Advisor (Staff)

  • Dr. Md. Arzu Miah said on March 24, 2012
    Yes, I want to make a device that produce energy from Sun and sell it to the consumers. Thanking you,
  • James expert adviser said on March 25, 2012

    @Dr. Md. Arzu Miah, do you have any idea on what you want to manufacture? There are 100s of products, do you have any expertise in this field? You need to figure out this, someone else for you can't decide what product you want to manufacture. You are at a very rough stage, do more R&D.

    Jestin James
    Startup Biz Hub - Senior Advisor (Staff)

  • Randy said on March 26, 2012
    Would like to start a solar business in central Missouri
  • sunil agarwal said on March 28, 2012
    We are into manufacturing of Solar PV module and have recently started into retail thru distributors. We wish to appoint good/hardworking and resourceful people as distributor. contact me at 9051166008
  • p.v.n.kumar said on April 1, 2012
    hi sir, this is kumar from Andhrapradesh. i would like start a solar business in my native place. how can i start it? investment?
  • James expert adviser said on April 2, 2012

    @p.v.n.kumar, when you are planing about it then just go and visit 5-7 solar farms to gather more knowledge. If possible work for a week or 15 days in the same field to help yourself. If you have tons of money, you can hire a consultant who will do everything for you but you can't validate the job done as you are not educated enough about the subject. Best option for you to take some real time training.

    Jestin James
    Startup Biz Hub - Senior Advisor (Staff)

  • Randy Derouen said on April 2, 2012
    US, Lafayette, LA 70518 Looking to start solar biz and cater to the oil field. Family members in oil field
  • Chirag Patel said on April 2, 2012
    Hi, i am Chirag Patel from Gujarat, India. I am a Mechanical Engineer & at present i am having a distributorship of solar thermal system. I am really intrested in starting my own solar business (Initially would like to enter in trading business & then after into production). Kindly suggest me - where can i get the complete training and detailed information about the solar energy industry (Thermal & PV). How can i get a registration for solar energy business.
  • Raj said on April 4, 2012
    Hi.. This is Raju from Vizianagaram (Andhra Pradesh) I would like to start solar inverter business in three districts. Can you please give me suggestion how could i start the business? and how can i understand the customer requirement? how do i calculate and explain to customer its better and cheaper than inverter which is used by power? Raju 0+918520075990
  • dhawal pandya said on April 5, 2012
    i m electrical engineer from vjti college bombay i'm interested in solar business in bombay pl let me k now all about solar industry business. thanking you
  • sidharth said on April 5, 2012
    hi, i want to start a solar business in banglore , i dont have investment but very much interested in solar business. Kindly suggest , how to start and grow in this business. HandPhone:09316688990
  • FEROZ said on April 6, 2012
    I'm from Dindigul, Tamilnadu, India. I would like to start business based on solar products with low capital investment. How much will bank agree to provide for this business? Need ur advice Thanks
  • Vishwas Umathe said on April 10, 2012
    Hi, i am VIshwas Umathe from Nagpur Maharashtra, India. I am a Civil Engineer & at present i am Working in L&T. I am really interested in starting my own solar business . Kindly suggest me - where can i get the complete training and detailed information about the solar energy industry. How can i get a registration for solar energy business.
  • kumar beginner adviser said on April 11, 2012
    Dear Vishwas, Solar energy is a vast and varied field. What do you want to attempt at the solar business? Where do you want to concentrate your business activity? As you are a civil engineer I suggest you can start a solar power generation business for residential/business complexes. The investment would be appx 100 lacs with expected return of 18% per annum.

    mohank51@gmail.com
    Solar Energy Consultant

  • Rajesh said on April 13, 2012
    hi sir, i am doing business in my native. Now i would like to start solar business in my native dist. i would like to take a dealership. Which company is the best.
  • Sugatha said on April 17, 2012
    Hi, I am from Tamil Nadu, I want to start a solar energy business here. I want to know what clearances and approvals I need from the government and other agencies before I go ahead.
  • anoop said on April 17, 2012
    Hi, I am from Indore and I want to start a solar energy base business, could you please guide me to setup and configuration details for the same.
  • Narendra Kumar said on April 17, 2012
    I want to do solar energy business and would want to start -off with low investment and speed it up slowly. I am located in Pune(India).I work in IT sector and have time-off on weekends (sat-sun) .Initially i want to work in weekends and later expand the business if its doing fairly well.Please give me some suggestions/advice on this.I have no prior experience in business sector.
  • Ndumiso said on April 19, 2012
    hi i want to start solar energy business, I don't have any money. Can you please guide me, I'm South Africa in a town called Pietermaritzburg
  • B. Manjula said on April 20, 2012
    I am in Chennai, Tamil Nadu and would like to start up a business related to solar power. Please provide the necessary details, either franchise or any other to help me enable to establish this solar power business in a small scale initially.
  • stan said on April 20, 2012
    how do i startup and where do i get training for solar energy equipment installation. who do i partner with. please provide guidance and ins and outs of this type of business. i live in gauteng south africa
  • siva murugan said on April 21, 2012
    Initially, you may go for a partnership concern of Solar Products - Solar panels, inverters, batteries, ups, street lights and solar power fencing. I can supply you all the materials. Pls write further to my mail id. my mail id is sivamurugan_mrt@yahoo.co.in
  • AJAY said on April 22, 2012
    I am in hyderabad, Andhra Pradesh and would like to start up a business related to solar power. Please provide the necessary details, either franchise or any other to help me start this solar power business in a small scale initially. hoping for a prompt action. with regards. ajay.
  • bindu babu said on April 27, 2012
    I want to start up a small solar installation company. what are the requirement form different agency or government. please give me the correct advices step by step.
  • S. Bharathi said on April 30, 2012
    We are located in Boisar, Maharashtra, my husband recently resigned his general manager post in a private company, we are planning to start something on our own, interested in solar energy, pls provide more details, pros and cons.
  • Moazzam Abidi said on May 3, 2012
    I m a graduate engineer from delhi working in solar sector and have a good knowledge how to start a solar product manufacturing business, if some one interested he can contact me on 9990002369
  • Castro Limardo said on May 3, 2012
    My business is located in Georgia. Please send me information about the solar business. My address is: 2539 Park Dr #A N.W. Kennesaw, Georgia 30144. Thank you
  • Kishore said on May 7, 2012
    I am from Andhra Pradesh. I would like to start at least 10MW capacity solar power plant. How can I proceed? What kind of arrangements to be done? How our government will encourage such renewable energy plants. Please guide and help me. Regards, Kishore.
  • Raj P said on May 8, 2012
    Hi, I am Raj from AP, looking for details on infrastructure required, project costing to setup a solar power plant of size 5 Mw. Also, would like to get details on support from government and policies. Appreciate your help!
  • Rahul said on May 9, 2012
    i am from Jaipur. i want to start solar cell business in Jaipur. Kindly suggest me for it with complete details including investment cost rate of return..
  • ARVIND KUMAR SINGH said on May 9, 2012
    DISTRIBUTOR SHIP REQUIRED FOR UP FOR SOLAR PRODUCTS OF INDIAN MANUFACTURERS/FOREIGN FOR OFF/ON LINE PRODUCTS
  • kumar beginner adviser said on May 11, 2012

    @Kishore For a 10 MW grid connected solar plant you need appx. 65 acres land and a capital of appx 110 to 115 crs. I can give you a total project from concept to commissioning and tie up for decent revenues of 18 to 20% p.a. If you have sources for funding you may contact me ?My email id is mohank51@gmail.com ?Regards, Kumar

    mohank51@gmail.com
    Solar Energy Consultant

  • Sangeeta Kulkarni said on May 11, 2012
    I am interested in doing Solar energy business. Can you please guide me step by step in getting into this business.
  • mayura wijerathna said on May 11, 2012
    Any one interest invest SOLAR/WIND/HYDRO projects in any country in Europ we can arrange even funds, 10 to 100 MW details mauram91@yahoo.se
  • Vijay beginner adviser said on May 16, 2012
    @Nitin Verma, Their is great opportunity for solar business in your state. Dealership/ Distribution has very wide scope in West Bengal. Business can be started with low investment. You may contact for help. at vijaynimej@gmail.com Regards...Vijay Ojha

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • Vijay beginner adviser said on May 19, 2012
    @sangeeta arun you have not mentioned what you are really looking for. Solar business is very vast in itself. whether you are looking for manufacturing or trading? You should always write in details about what you are looking for, Your investment plans etc so that you could get proper guidance.. Regards, Vijay Ojha.

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • primoz said on May 23, 2012
    Hello, I am from Slovenia, from Europe. I am very interested in starting my own solar business. Please provide me related information regarding solar power business. regards, primoz
  • Hemanshu said on May 24, 2012
    Hi, I am based at Varanasi, UP, India. Please tell me how to start Solar power business. What all necessary thing that I have to collect to start the business and what could be initial investment.
  • Vijay beginner adviser said on May 24, 2012
    @Hemanshu, do you want to sell solar products or you are interested in manufacturing? If you go for manufacturing you should go for proper training & gather more information. Investment can be estimated only once you decide what you want to do. Regards,.....Vijay Ojha

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • Ibrahim Lodi said on May 28, 2012
    I like to set up solar energy business in Malaysia and UK. Pls inform me how i can proceed in this regards. Thank you .
  • Vijay beginner adviser said on May 29, 2012
    @V R Prabhu, With small investment you can go for retail or dealership. For proper guidance you may contact.

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • Amol Patil said on June 1, 2012
    I am a resident of Jalgaon district of Maharashtra State in India. I want to enter into this business. I have done my M. Tech. in Green Technology and have sufficient knowledge base to run the business. In this regards your guidance is requested. Please feel free to contact me on my cellphone +919404501198.
  • Rahul said on June 4, 2012
    Dear All, I am interested in setting up a 2MW solar plant in Gujarat, kindly help me with further procedure & government incentives I can avail. I can get funding by myself through some private Equity. If any other enthusiast are interested please contact on my cell.. 9967241245
  • Shanmugam Hiregowdu said on June 5, 2012
    Hi, I am shanmugam, and I am interested in start up a solar business. Please help me how to start this business. I am put up in Bangalore and looking some help. I am not having any idea in this business and also in electronic side.
  • Vijay beginner adviser said on June 7, 2012
    @shimreingam, For manufacturing solar products you should have knowledge You are at very early stage, so try to get more information & get proper training. At this stage you can go for retail or dealership.

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • Shanmugam said on June 14, 2012
    Hi Vijay, I am not interest in Start up manufacturing business. I am interested in start up a dealership or retail business. Can you please guide me on this. I am not having any Idea on this. I am new to business side. Currently I am working in Multi national company. I am not interested in working.
  • Vijay beginner adviser said on June 15, 2012
    @Shanmugam, If you are interested in dealership, write with your investment plans & location where you would like to start your business. You may write to me at my email id. Regards, Vijay.

    Vijay Ojha || +91 9654384395 || vijaynimej@gmail.com || Solar Energy Business Consultant

  • pavankumar said on June 18, 2012
    hi vijay am interested in starting a solar products retailing business can you please help me what it will cost me and where i can get financial assistance and etc in short mail me the total details about starting a company waiting for you reply with all my hearts
  • Udaya Bhanu Ghadei said on June 25, 2012
    Hi I am udaya from Orissa Bhubaneswar. Now i am working in VGURARD INDUSTRIES. Am interested in start up a dealership. can u help me provide the details.
  • T R RAO said on June 29, 2012
    I am a retired Executive from National Dairy Development Board and is presently placed at Visakhapatnam. I am very much interested to start the Solar power system business so that I can provide some employment to the needy people and also to become a self sufficient as we do not get any pension in NDDB. Please provide me the related information.

Comment

(All the above fields are required.)
成版人性视频app-亚洲做性视频在线观看