carbon additive 1. High carbon content:90%, 92%,95% 2.Factory directly ... ). 2. Factory •Experience More than 20 years experience in producing Additive Carbon and 10 years in exporting. Our factory has been ... right for carbon export. •Service we can supply the carbon additive with 90%,92%,93% and 95% with good quality.Owning ... to many foreign countries in Europe,America,and Asia. carbon additive