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Shanghai Heng'an Miniature Bearing Sales Company was privatized in 2001 having its Head Office in Shanghai and measurement room, quality department, technical department, manufacturing plant, assembly workshop and warehouse in Wuxi. The management team has over 30 years of design-and-made experience of customized miniature bearings for OE customers worldwide. SFH is leading miniatures brand accredited ISO9001:2015 and ATF16949:2016.

SFH offers a complete range of miniatures. The inner diameter of inch-size miniature bearings starts from 0.0469 " (Designation: RO~R10). The inner diameter of metric-size miniature bearings starts from 0.6mm (Designation: 68/0.6~6806). The precision of SFH miniature bearings is conformed to ABEC1-ABEC7 standards, bearing steel complied to the international grading standards is used to ensure SFH’s bearing fully compatible to international brands.

Zhejiang Rui’er (ZJRr) was founded in 1956, it is a professional bearing manufacturer with its own R&D capability regarding ball and roller specialty bearings. Its 6305 6206-6209 DGBB had won multiple Excellence Product Awards to national competition level.