石墨化石油焦增碳劑、石墨粉、石墨塊，品質穩定，氣孔率低，各種質量、粒度及包裝可根據客戶要求，歡迎來廠考察。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.