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All glass evacuated tubes are the key component of solar collectors. The evacuated tube is similar to a conventional Dewar flask and consists of two borosilicate glass tubes, a glass with high chemical and thermal shock resistance. The outer side of.....

We are Sunrain Solar Water Heaters Manufactures Co., Ltd. The products of us is the solar water heater and the vacuum tube, Our company has the ability of producing 4 million all-glass evacuated tubes and 300 thousand solar water heaters per year......