Brief： 1.Glass vacuum tube solar collector, high temperature,antifreeze,vacuum insulation. 2.Copper heat pipe,Start up quickly,transfers heat quickly, low start-up temperature,low temperature resistant 3

undefinedundefined High pressure polyurethane foaming insulation,as the prefect density and the thermal conductivity coefficient is small, so it can provide effective heat preservation
5.The outer tank is color steeundefined sensation will be more comfortable
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