Sangle was established in 1987 and has grown into Chinas biggest solar water heater manufacturer. Sangle has a total investment of 2 billion RMB and its annual production reaches 2 million units. Headquarter is in Shandong province, Sangle will build altogether 9 manufacturing bases all over China in the near future, now 5 bases have already been established and put into use. Zhejiang Sangle Digitization solar energy Ltd. is one of them, which covers an area of about 13500 square meters and has ...