SлM(jn)̽PVCʩʩеһh(hun)ز̵ͨ·죬йܾW(wng)O(sh)xDZPF(xin)ʩخa(chn)(xing)ĿʹÿЧCʩİȫ
ճʹУ(dng)ҲҪM(jn)оSo(h)
ô֪PVC(dng)ʩճSo(h)B(yng)ʩЩ?
PVCʩڵճSo(h)ʩ
1ʩF(xin)_ǰҪȻM(jn)Є(dng)ʩ PVCʩȫڹɣؓ(f)؟(z)ؓ(f)؟(z)O(sh)ʩzʩgr(sh)zÿϰ°zl(f)F(xin)}̎
2ڵľSo(h)(yng)ճz(ni)ʾNȽͨ(bio)־(yng)@һl(f)F(xin)p(yng)r(sh)ޏ(f)_PVCʩڑ(yng)еá
3ͨRr(sh)I(lng)(do)СMɱˆT(dn)νML3ָͨ(do)Tؓ(f)؟(z)ͨI(lng)(do)Ͱȫo(h)PVC؇ڵճzSo(h)ȫؓ(f)؟(z)ˈ(bo)ÿĽͨͰȫo(h)zr