գЈ(chng)ʿA(y)Ӌ(j)Ƅ(dng)ȫϩ(PVC)Ј(chng)^m(x)L(zhng)
^ȥ10Ї(gu)PVCһ2019꿂_(d)2000fӲ|(zh)ܵPVCռ˿(sh)һܛĤƬЇ(gu)ܛ|(zh)PVCa(chn)Ʒڇ(gu)ԽΣC(j)ԁЇ(gu)U(ku)ʯԭϵPVCa(chn)Ї(gu)һȳF(xin)^ľa(chn)(ҲϩPVC)^(gu)(ni)1000fȻԭ̓r(ji)µʯԭPVCĸ(jng)(zhng)½S(gu)(ni)L(zhng)ȱ(jng)(zhng)̱̭ƽõmȻЇ(gu)(jng)PVCM(jn)ڇ(gu)ÿM(jn)200fS(gu)(ni)a(chn)m(x)M(jn)һֱ½ֵע2020Ї(gu)PVCM(jn)8״γ^100f
ӡȽc(din)l(f)չO(sh)ʩӡȌ(du)r(nng)I(y)ܵҲڳm(x)ӡȳ^70%PVCڹܵˮˮܵȻMӡPVCʢ(gu)(ni)a(chn)܅s]L(zhng)5ҹ˾Ӌ(j)a(chn)ֻ150f/ӡPVCM(jn)2019L(zhng)10%_(d)214fձPVCa(chn)̄tɞߣF(xin)ѽ(jng)^Ї(gu)_(ti)n(gu)ɞӡPVCa(chn)ƷԴ(gu)