... . round nut 2.ISO9001:2008 & ISO14001:2004 3. factor, best price,good quanlity and service 4. promopt delivery ... GB, DIN, JIS, ANSI, BSW, ASMEGrade3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9 ... Metal Products Co., Ltd. is a manufacturer of screws with well-equipped testing equipment and strong ... and mainly produces forged fastener precise screws, which are made of titanium, copper, aluminum, iron, stainless steel and ...