1. ISO9001 2. two side inserts 3. high efficiency , security and stability 4. surface treatment: electrostatic powder coat Advantage:1.ISO9001;2.Two side inserts;3.High efficiency , security and stability;4.Surface treatment is electrostatic powder coat. Waterproof moisture-proof and anti-rust;5. Structure is stable, durable, stable packaging performance. Brand nameGuangheModel numberGH-SP- ...