CARBON BLACK 1.Supply carbon black N220,330,550,660,C111,311 2.Wet process 3.Used ... in rubber,plastic industry 4.High quality We mainly produce and sell carbon black ... America,European Union and South-Eastern Asia ect. Carbon black Executive Standard : GB3778-2003Items of TestN220N330N550N660Iodine Absorption g ... looking forward to cooperating with you. carbon black C111