Subcategories
Communication Engineering
．Planning and designing subcontracting. ．AC and DC power engineering subcontracting.
．Grounding engineering subcontracting ．Power generator engineering subcontracting
Mechanical and Electrical Engineering
．Planning and designing subcontracting.．AC and DC power engineering subcontracting.
．Grounding engineering subcontracting ．Power generator engineering subcontracting
Steel Structure Engineering
．The preparation and installation of all kinds of gratings
．Preparation and installation of trench cover.
．Manufacturing of Metro Deckand water-stop end board.
．Cold working steel structure engineering subcontracting
．Mechanical and metallic processing and manufacturing