石墨化石油焦增碳剂、石墨粉、石墨块，品质稳定，气孔率低，各种质量、粒度及包装可根据客户要求，欢迎来厂考察。Graphitized petroleum coke carbon additives, graphite powder, graphite block, stable quality, low porosity, grain size, quality and packaging according to customer requirements, welcome to visit factory.