we produce and sell all kinds of borosillicate glass tubes used for solar heater water.Type: Φ47X1.65, Φ47X1.73, Φ47X1.75, Φ58X1.74 Φ58X1.75 Φ58X1.94 Φ58X2 Φ37X1.35 Φ37X1.63
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