We are Anhui Zhongtian Machine Manufacturer Co., Ltd in China which is a specialized manufacturer for Hydraulic plate Shearing machine, hydraulic plate bending machine/press brake, plate roll machine(three or four-roller). We have high quality, competitive price, excellent reputation, and we can offer a long-term cooperation with you. For more details for our company, please see below our website http://*****/ http://***** We have traditional and CNC machine for your choose. Our machines are matching the low-voltage electrical appliances which are from SCHNEIDER in FRANCE or Simens in Germany. the O-ring are also import parts.