Shenyang zhongfu kejin pressure Vessels Co.,LTD. has developed and produced pressure vessels more than 20 years. It is a joint venture enterprise of CNBM(China National Building Material, listed in HongKong Exchange with the stock code HK3323) and IMRCAS(Institute of Metal Research, Chinese Academi of Sciences). Kejin's business operation includes manufacturing and sales of the B1 and B3 grade pressure Vessels and after-sale service; Developing and studying the advanced materials and technology about the B1 and B3 grade pressure Vessels; technological development; technology transfer, technical advice and technical service, etc . Kejin is producing various type of pressure vessels , including CNG steel cylinder and CNG composite cylinder with steel liner (hoop-wrapped) for vehicle, high pressure seamless Aluminum Alloy cylinders, Aluminum Alloy liners for carbon fiber wrapped cylinders, fully wrapped carbon fiber wrapped cylinders, portable oxygen respirator and sample cylinders. The annual production of all kinds of cylinders is 300,000. The company was permitted to design, develop and manufacture B1 and B3 grade vessels by General Administration of Quality Supervision Inspection and Quarantine of the PRC. The company obtained ISO9001 quality system certification and created a perfect quality control system with experienced troops of production staff and technicians. Kejin's product quality has achieved many famous customer's recognization. Our customers includes Coca Cola , Pepsi-Cola , Drager , Air Products , Honeywell , Air Liquide , Messer , Linde etc .