Rizhao Ninefine International Trading Co., Ltd. is specialized in the development and marketing of petroleum coke, calcined coke, graphite petroleum coke, sulphur, silicon carbide, carbon additive and so on. Rizhao Ninefine International Trading Co., Ltd. has a highly efficient management team. We have strict internal management systems and highly talented technicians who have rich working experience in the coke industry. In addition, we have set up several departments, including R&D, sales ...