urgently professionaly import to china:green pet/met(coal)if pet-coke,pls advise the crude oil density.Calcined Petroleum Coke like needle coke...we are end user.we need material grade for making:Graphite Electrode, Graphite Anodes, Carbon Block, Graphite Paste, Special Graphite Products... not for fuelthe important strick limitation :grade S% Show More