Sinopec Yizheng Chemical Fiber Co., Ltd. Yizheng Chemical Fiber Green Bio-Based Po3G Controllable Preparation And Po3G-Ptt High Performance Elastomer Product Development Project Other Vacuum Obtaining Equipment Vacuum System\Non-Condensable Gas + Propylene Glycol + Acrolein + Steam 728M3/H Inlet >1~2Kpa(A) >20~150℃ Exit >100~150Kpa(A) Tender Announcement [Change Announcement]