ZIBO Wel-Fit Metal Products CO., LTD.iwas founded in 1988. In 2001, with the registered capital of RMB 32.6 million and the fixed assets of RMB 150 million, covering the land of 200.000 m². There are more than 1000 staffs including 150 senior engineers and professional technicians. The company has achieved 40000 tons of annual production capacity with the annual sales exceeds 500 million. The company has been approved by a number of well-known petroleum companies, and quality management systems, such as PED, API and ISO9001 all across the world.