... die,nib PCD, CD, ND or tungsten carbide,standard size for copper, steel, Al, carbon wire drawing. 1.We supply with PCD ... steady performance. 2.We have standard size for drawing different materials use, such as: copper, steel, Al, carbon, etc., according to your ... .4,OEM welcomed.Xiamen Poko Precision Die of Wolfram Steel Tool Co., Ltd is another subsidiary company of POKO Group besides ...