We are Xinzheng Chengxin Carbon Co., Ltd, handling both manufacture and export of recarburizer/carbon additive (mainly graphitized petroleum coke and calcined petroleum coke) since 1988. As one of the biggest carbon additive producers in China, we possess a strict quality controlling system from raw material to processing & testing. With developing quality control system and enlarging producing capacity, we mainly can produce high quality graphitized petroleum coke and calcined petroleum coke with 6000MT monthly producing capacity. Up to now, we have supplied many reputable foundries and steelworks in USA, Japan, Korea, Italy, etc. High reputation at home and abroad has been won for our superior quality and competitive price.