Reversing haul-off unit eliminates many problems of ling channel for the rotating die head, difficult sealing for the melt, compound leakage being easy, unsymmetrical heating, difficult maintenance, 7178788094934171783-blid-8832749036559396940

522+223+375ตรงไม่พูดเยอะ@สิบเก้า​16/12/62วิเคราะห์ตัวเลข