Zhangjiakou Zhengtong Petrochemical Metallurgical Machinery Co., Ltd. is a professional supplier of Pump valve accessories & Pressure vessels. With high quality products, excellent service and a good reputation, we have won great support from customers around the world. Thus, our scale has been expanded. We also offer all kinds of OEM/ODM services. At present, we export products to Russia. We have established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we are looking forward to even greater cooperation with overseas customers based on mutual benefits. Please feel free to contact us for more details.