SRF Bearing strictly controls the procurement channels of raw materials. The quality control department will conduct quality system audits on suppliers in accordance with ISO9000 and QS9000 quality certification system standards, determine qualified subcontractors, and make designated purchases, and regularly check the quality assurance capabilities and quality of suppliers.

Shandong Haizhi Precision Bearing Material Technology Co. Ltd. was estalished in 2016 as Qilu New Fourth Edition listed company (shareholding code: 300971). Its core shareholder is Qingdao Haopin Haizhi Information Technology Co. Ltd, which is created with the same heart and creates a good brand.The SRF trademark is the first set of China's first self- aligning ball bearing trademark in 1937. and is now inspirational to create a “100-year trademark" enterprise.The company is a core backbone team from high-end manufacturing companies. Now it has established strategic joint venture branches and production bases in Luoyang, Liaocheng, Changzhou, Harbin, Wafangdian, Cixi. As the bridge and link between the brand and the market, SRF has been working on providing more value-added services to our customers.