We are a carbon black factory from China; We are very interested in establishing business relationship with you. We produce follows model: N110,N121,N134,N220,N231,N234,N299,N326, N330, N339,N343, N347, N351,N358,N375, N550,N-650, N660, N762,N772, N-774 ETC. ISO 9001,We are looking forward to hearing from you soon!Best RegardsDavid liuManager
