... Certification:FCC,RoHs Specifications 20 Years of Experience on calcined petroleum coke Professional Manufacturer Low Sulphur Content High Absorption ... of the leading carbon and graphite products manufacturers in China, Shenzhen Puchuangyuan Technology Co., Ltd have specialized in ... , Korea, India, USA, Italy, Indonesia etc.Duratight Calcined Petroleum Coke has the features of high carbon,low sulphur ...