We can supply sufficient Graphite petroleum coke annual production in 40,000 tons, Semi calcined petroleum coke annual production 80,000 tons and anthracite based carbon additive annual production in 150,000 tons. Special particle size is available for your requirements. Our factory has a complete quality system supervision system . It proceeds as raw material analysis , process supervising , final product  inspection , perfect package assurance and close delivery tracking . Batch management and process quality control is strictly carried out throughout the production . Nowadays , our products have been export our products to USA, Korea, Japan, South Africa, Indonesia, India and etc.