... is very big Shipment Port ShenZhen or HongKong Delivery Time 20-30days,According to the volume to determine the ... in high end industries like hard disk,camera,electronics,etcall kinds of screwCompany Profile :YUEI Precision Co.,Ltd,located at guangdong ... forming, rolling, heat treatment, surface treatment, thread rod and head painting, checking and selecting, EDI ultra-pure water treatment, vacuum ...