... . secondly, burned the fuel material(coal,or wood,or natural gas ,oil ) in the furnace. Reactor will be slowly heated, ... oil10T*45%*4,500rmb=20,250RMB2carbon black10T*35%*520RMB=1,820RMB3steel wire10T*13%*2200RMB=2,860RMB4Gross profit24,930RMB5Daily Net ... Profit9,010RMB×25=225,250RMB7Yearly Net Profit225,250RMB×10=2,252,500RMB 10 tons used tyre retreading machine with CE certificate