Holdings Business License Original China Customs Declaration Unit Registration Certificate Credit institution code certificate Trademark Registration Certificate ISO9001 Quality Management System Certification Annual tax credit A-level certificate_00 Building curtain wall engineering design B qualification_00 First-level certificate of professional contracting of building curtain wall engineering Public certificate Foreign Trade Operator Registration Form Entry-Exit Inspection and Quarantine Inspection Enterprise Registration Form CE certificate CE certificate Exterior Design - Building Curtain Wall Decorative Plate (carved three-dimensional aluminum plate) Exterior Design - Building Curtain Wall Decorative Plate (Four-dimensional Star Aluminum Plate) Exterior Design - Building Curtain Wall Decorative Plate (Rhombus can open styling aluminum plate) Exterior Design - Building Curtain Wall Decoration (Hexagonal Mosaic 3) Exterior Design - Building Curtain Wall Decoration (Hexagonal Mosaic 2) Exterior Design - Building Curtain Wall Decoration (Hexagonal Mosaic 1) Automatic Face Warping Machine Control System V1.0 Automatic CNC machining center control system V1.0 Curtain wall blanking design system V1.0 Curtain Wall Door and Window System Structure Optimization System V1.0 Curtain Wall Pressure Calculation System V1.0 Rectangular cell plate bulk cutting assembly drawing software V1.0 Precision blanking size control system V1.0 Sliding door pulley automatic aging test system V1.0 Colorimeter Analysis System V1.0 Automatic Spraying Experiment Control System V1.0