... sample for test 4.Prompt delivery Carbon black in plastic & rubber industry 1.Character:Type: n220 ,n330,n550.n660 ... 1.3 Usage:maily applied to various rubber products such as tyres, rubber overshoes, cable, seal ring, tape etc ... container,we can mix different items in one container. 2.Quality control,before shipment,free sample for ... welcome here! (hot sale) Carbon black in plastic & rubber industry