... China. We are THE PRESIDENT OF STEEL BALL ASSOCIATION UNIT.2.We have professional sales team which takes in ... of wire to high-level precision steel ball.MAIN PRODUCTS:1. Stainless steel ball, with material AISI304, 316, 420C, ... widely used in several industries, such as hardware, sliders, ball bearing lead screw, wheels, toys, bicycles, bearings, ... while placing order Cement alloy steel ball 25.4mm