... mercuryand or other hazardous materials.2,high light efficiency, 90% of the electronic energy transfer into visible light.3,Energy saving ... ,Rugged solid, PC can under pressure, not easy to broken.5,Systematic design of lens and lamp cover.6,Lens with both ... best transportation. 2. According to the customer's requirement ,different specifications of the items can be mixed shipments and lower freight. 3 ...