PVC锟斤拷锟絙锟斤拷锟侥伙拷锟絎(xu锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
PVC锟斤拷锟絙锟斤拷锟侥伙拷锟絎(xu锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷
PVC锟戒實(sh锟斤拷)锟斤拷一锟絅锟斤拷烯锟斤拷锟侥聚猴拷锟斤拷锟絴(zh锟斤拷)锟斤拷锟斤拷锟斤拷锟斤拷锟揭伙拷N锟角結(ji锟斤拷)锟斤拷锟皆诧拷锟较★拷PVC锟斤拷锟斤拷锟节岋拷(sh锟斤拷)锟紿使锟斤拷锟叫斤拷(j锟斤拷ng)锟斤拷锟斤拷锟诫穩(w锟斤拷n)锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟給锟斤拷锟接癸拷锟斤拷锟斤拷色锟较★拷锟斤拷锟絖锟紧劑硷拷锟斤拷锟斤拷锟斤拷锟接勶拷锟斤拷锟斤拷锟叫诧拷锟斤拷燃锟皆★拷锟竭忥拷(qi锟斤拷ng)锟饺★拷锟酵氾拷锟阶冿拷锟斤拷锟斤拷约锟斤拷锟(y锟斤拷u)锟斤拷锟侥幾何凤拷(w锟斤拷n)锟斤拷锟皆★拷 PVC锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷還原锟斤拷锟酵忥拷(qi锟斤拷ng)锟结都锟叫很忥拷(qi锟斤拷ng)锟侥抵匡拷锟斤拷锟斤拷然锟斤拷锟斤拷锟杰夠被濓拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷帷拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷g锟斤拷锟斤拷也锟斤拷锟絤锟斤拷锟絚锟斤拷锟斤拷N锟斤拷锟饺伙拷锟絅锟斤拷锟絴锟侥堬拷锟较★拷
PVC锟节加癸拷锟絩锟桔伙拷锟截讹拷锟斤拷一锟斤拷锟角筹拷锟斤拷要锟侥癸拷藝锟斤拷锟斤拷(sh锟斤拷)锟斤拷锟斤拷锟斤拷藚锟斤拷锟(sh锟斤拷)锟斤拷锟斤拷(d锟斤拷ng)锟斤拷锟斤拷(d锟斤拷o)锟铰诧拷锟较分斤拷膯锟斤拷}锟斤拷 PVC锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟洁當(d锟斤拷ng)锟筋，锟戒工藝锟斤拷锟斤拷锟斤拷窄锟斤拷锟截別锟角达拷锟斤拷锟斤拷锟斤拷锟絇VC锟斤拷锟较革拷锟統锟节加癸拷锟斤拷锟紷锟絅锟斤拷锟斤拷通锟斤拷要锟斤拷锟诫潤锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟皆ｏ拷锟斤拷锟斤拷锟酵拷锟绞癸拷玫亩锟斤拷锟叫★拷锟斤拷锟斤拷锟斤拷锟絇VC锟斤拷锟较★拷 PVC锟斤拷锟秸縮锟斤拷锟洁當(d锟斤拷ng)?sh锟斤拷)停锟揭伙拷锟?.2~0.6%锟斤拷