Compact, circular smooth, high collection efficiency. Pressure to run, plenty of water, water lasting. Runner copper, glass, stainless steel piping, blue and gold enamel interior silicon, solar water heaters offer good reliability and long life. Shandong complementary photovoltaic solar water heaters, solar water heater production to meet the all-weather, heat exchanger design, clean water pollution. Medium cycle start fast, and anti-cold, more suitable for cold regions. Solar water heater R & D | Steel Yi solar water heaters (certified) | Solar water heaters are provided by Solar Co., Ltd. Qingdao Yi Gang. Qingdao Yi Steel Solar Limited (www.gangyisolar.com) is Qingdao, a leader in solar and renewable energy, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yi Gang leader in Qingdao with the staff warmly welcome all inquiries negotiations to create Qingdao Yi Gang a better future.