As a sole subsidiary of Longyi Group, Liaoyang Longxing Petrochemical Machinery Co.,Ltd. is a Sino-Hongkong joint venture. Our company has gathered a group of senior technologists and professional technicians. With 500m2 office building and production building, our company is specialized in producing high efficient, engery-saving product, drain valve. At present, drain valves developed by our company include constant temperature(waxiness) drain valve; thermal power-type, disk-type drain valve；mechanical floating ball type drain valve. Constant temperature(waxiness) drain valve is our company's patent product. This product is widely used in the fields including petroleum, chemical, textile, paper industry, printing & dyeing and ships etc.. It plays an important role for the customers in saving energy.

Tested by National Quality Test Center on drain valve, our company's products are in accordance with GB12247-51-89, ZBJ16007-90 and JB/T9093-1999 standards. It is tested by many petrochemical companies in the application that this product has stable quality.

Our company also produces DLB multi-functional oil transfer pump and sealing member etc..

Our company has invited the patent inventor of this product as our company's technical advisor to ensure product quality.

Our company will serve you with "Longxing technology, Longxing products, Longxing quality and Longxing service".