... size screw:M1.0~M4.02.High Precision screw3.Be used in high end industries like hard disk,camera,electronics,etc ... according to the demand of the customers micro precision screw Featured product:High precision screws,machine screw,hard disk screws,self ... used in high end industries like hard disk,camera,electronics,etcall kinds of screwCompany Profile :YUEI Precision Co.,Ltd,located at guangdong ...