... w1 surface Bright Surface 1.producte name tungsten rod in chemical industry2.Materials and componentsTungsten contentThe sum of ... %≤0.01%3.Specificationsdia1-dia12mm4.applicationTungsten bars are widely used in ceramics, printing machinery, forestry, rubber, plastics, light textile ... the best material,All will tested by our quality department , and before loading ,we will test all, in order to supply ...