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ผนังกันความร้อน - An Overview
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เครื่องเชื่อมท่อ ppr - An Overview
The thermal conductivity of PPR is incredibly reduced, meaning temperature can not quickly be conducted from the surface ecosystem for the liquid in the pipe, and vice versa.?????????????????? ?????????????????????????? ?????????????????????????????????????? ?????? ???????? ???????????? ???????????? ?????Outer Layer: The protective outer layer shi