暖通空调                                                                  机械工业

                              油脂化工                                                              食用油加工

                               化工工业                                                               表面处理

                             造纸工业                                                               食品及医药

                             电厂电站                                                                汽车工业

                             钢铁工业                                                              船用和发动机