暖通空調                                                                  機械工業

                              油脂化工                                                              食用油加工

                               化工工業                                                               表面處理

                             造紙工業                                                               食品及醫藥

                             電廠電站                                                                汽車工業

                             鋼鐵工業                                                              船用和發動機