and the industry has large room for improvement

needle coke is a carbon material produced by delayed coking of refined petroleum pitch or coal tar pitch (removing impurities and native quinoline insoluble matter). it has a silver-gray, metallic-glossy porous appearance. solid, with low porosity, low thermal expansion coefficient, low metal content, high electrical conductivity and easy graphitization. the upstream of the needle coke industry chain is the supply of production raw materials such as…