It’s a current trend in roofing: because of Americans’ growing awareness of and concern for climate change, people are jumping on the band wagon to install white reflective roof systems, known as ...

提要：高分子防水材料三个时期，三元乙丙时代——PVC时代——TPO时代。三元乙丙即EPDM，是第一代的高分子防水卷材;随着市场扩大、技术要求提高，PVC在市场上逐渐盛行。后者采用热熔焊接法施工，克服了前者在施工搭接中的弱点。 高分子防水材料三个时期 ...