ãZhejiang Qianjiangchao Luminous Energy Co., Ltd.is a well-known large-scale private enterprise;it is professional in producing vacuum tube. The company founded in 1986,started by producing electric beads,and then developed as producing Zhejiang Province's the first auto used H4 bulb largest professional manufacturers, only for a short period of 4 years. Over these years, it is renowned at home and abroad for high-quality, high-performance products.ããIn 2000, they timely adjusted the industrial structure, entered into the same technology ,namely sunrise industry "solar vacuum tubes" as the new direction of sustainable development.With high starting point,rapid development,only five years, they realized a fission-type development,in terms of technology,equipment,processes,products and personnel;production lines developed From 1 to 20. Adopting new graded coating, vacuum technology and strict control to ensure the vacuum tube high collector efficiency and anti-decay properties; Putting up Round intelligent automatic cutting equipment to ensure accurate tube;Deionized water reverse osmosis equipment, using pure water to ensure the tube is highly cleaned. The products have General efficient tubes, three-high tubes, three-cavity tubes and other series, specifications like Ñ47, Ñ58, Ñ70 and so on, and from 1.2m to 2.1m in length about 100 species. Its nnual output can reach 7 million vacuum tubes.ããQianjiangChao company had already passed ISO9001: 2000 of International Certification. Product quality had been spot tested by the Quality Supervision and Inspection Center of National Solar Water Heater,and all technical indicators were qualified and far more than national standard. At present, solar vacuum tube has been supporting dozens of famous domestic brands and exporting to Europe, America and everal dozen of other countries and regions, the product gained the widespread usersâ trust.ãã"Pursuit of harmony and values" is the co