... plastic(or rubber) and plastic are widly adopted.3.Tank shaped use the advanced welding technology, end socket arcbutt ... gas, butane, dimethylmethane, propylene,etc.6.Cross section of tank could be oval, round and round-square.Heat insulation and ... suction truck,sewage suction truck10. High altitude working truck11. Chemical liquid truck12. Van truck,insulated truck,refrigeration truck13. Semi Trailer, ...