The first domestically-adopted new filter press developed by Sinopec Shanghai Petrochemical Polyester Co., Ltd. in cooperation with related manufacturers was successfully tested. In the Polyester No. 2 Oxidation Unit, this new filter press replaces the pressure centrifuge and vacuum filter of the original PTA separation system. It saves nearly 20,000 kWh per day, and saves water and gas, reducing power every day. The cost is about 20,000 yuan. In addition, millions of equipment maintenance costs can be saved each year. Inner Gear Ring,Ring Gear,Ring and Pinion Gears Spur Gear,Gear Rack Co., Ltd. , http://www.htr-machinery.com