18/F, Building A, TOPBOX, No. 69 Beichen West Street,Chao Yang District, Dezhou, Shandong, China,100029
LONGSTONE\'S HEADQUATER LOCATED IN BEIJING AND FOCUS ON PROVIDING THE BEST CARBON PRODUCTS TO THE MATKET SINCE 1998.
met coke, foundry coke, gas coke, semi coke.cpc, gpc, carbon cold ramming paste, carbon electrode, ferro silicon, silicon metal, ferro chrome, ferro phosphorus.insulation bricks.
