pvcwһNҪעԭѽ(jng)ȫȏVʹÕr(sh)g^(gu)һôpvcwһNW(xu)ԭ仯W(xu)|(zh)pvcӢĺ(jin)Q(chng)PVCPolyvinylchloride polymer =PVCӽYϩl(f)¾ۺ϶ɵğԘ(sh)֬
pvcwϩľôpvcw@ЩW(xu)ɷ߀ܼһЩԭ@ӵpvcw;ϩھеĻW(xu)c(din)磺pvcwɫԓSĿǰϳF˺ܶSɫpvcwGɫpvcwԼһЩpvcw@Щpvcw]l(f)Ե^ϩиõĸM(jn)߀Эh(hun)GɫȹЧf(shu)һNl(f)չ(chung )͵pvcwѽ(jng)õЈ(chng)ďVuͲ