Shandong CTNO New Energy Co., Ltd is an ISO 9001 Certified(Certificate No: 06911Q10642R0M) manufacturer specializing in manufacturing and exporting Heat Pipe Solar Collector, Vacuum Solar Tubes, solar water heater, Split solar heating kit system to overseas in Shandong Province of China. We engaged in the development, production and application of the solar energy products and the solar energy industry. We supplies solar water heater parts and whole System to individual, commercial, industrial domestic and international users. Our Heat pipe solar collectors are tested in Germany ITW and are issued by Solar Keymark (Registration No: 011-7S1957 R )