... proof lamp,three proof light,water proof light Certification:CE,ISO9001,ISO14001 Lifetime:100000-120000h Water Proof Dust Proof Lamp ,Three Proof Light ,Three Proof ... choose electrical ballast.Features1.Aluminium Alloy Shell2.Water proof,dust proof,corrosion proof,F1,IP653.The surface is static-sprayed expoxy ... oxidize approcessing to the electric circuit control plank. Uding explosion-proof lamp