4399在线视频免费观看

污水(shui)處(chu)理(li)(li)工(gong)(gong)程(cheng)、凈水(shui)處(chu)理(li)(li)工(gong)(gong)程(cheng)、廢氣處(chu)理(li)(li)工(gong)(gong)程(cheng)的設計(ji)施工(gong)(gong)(不(bu)(bu)含危險廢物);室內外裝飾(shi)工(gong)(gong)程(cheng)的設計(ji)施工(gong)(gong);銷(xiao)售(shou):污水(shui)處(chu)理(li)(li)設備、凈水(shui)處(chu)理(li)(li)設備、環保(bao)設備、二氧化(hua)氯發生(sheng)器(qi)、建筑材料、玻(bo)璃(li)隔(ge)(ge)斷(duan)、鋁合(he)金(jin)隔(ge)(ge)斷(duan);水(shui)處(chu)理(li)(li)藥劑(不(bu)(bu)含危險化(hua)學品及易(yi)制毒化(hua)學品);設計(ji)、研(yan)發、銷(xiao)售(shou)、維修:變(bian)頻器(qi)、軟啟動器(qi)、儀(yi)器(qi)儀(yi)表、五金(jin)機電(dian)、交直流(liu)電(dian)源(yuan)裝置、高低壓開關柜(ju)(不(bu)(bu)含電(dian)力(li)設施)。(依法須經批準的項目,經相關部門批準后方可開展經營活動)