... and services; Certification:ISO14001 ISO9001 SGS Specifications Custom made bolts screws Process Capablilities Standard ISO, GB, DIN, JIS, ANSI, ... Metal Products Co., Ltd. is a manufacturer of screws with well-equipped testing equipment and strong technical force. ... equipment from Taiwan area, and mainly produces forged fastener precise screws, which are made of titanium, copper, aluminum, iron ...