es, hexes, ellipses, cam profiles, and eccentric features on both the OD and ID of a part, especially for the precision parts.?CentificateGold star machining Profile Registered: Dongguan Qingyu Machinery Co., LTD.Location: 4, Shangzhen 1st Road, Shangjiao District, Dongguan City, Guangdong Province 523873, ChinaPhone: +86 -769 - 81627193Fax: +86 -769–81627192Hours: (GMT +8) 8:00 - 12:00; 13:30 - 17:30Foundation Capital: 500000 USDFounded in: May 2011Founder:Mr. Jin NanyiEmployee:176 staff memb