（1）Please use a litter water and soft fabric (air-laid paper) to clean the lens & reflector if necessary.
（2）Forbid to use industrial solvent to clean the lens, such as alcohol.
（3）The working temperature is -40ºC～+80ºC for lens, under 120ºC for reflector.
（4）Storage environment temperature is 0ºC～40ºC，humidity is 30%~95%.Optic Lens has the function to change the ray of light, it is made of optical material, the effect shall be influenced once pollute. Please do not open the packing before use it，to avoid the dust pollution.
（5）Protect the product from the sun and other ultraviolet ray, as these will lead to aging, change color, crack, etc.
（6）Please ware gloves once install the lens, avoid to abrasion the lens surface.
（7）Forbid to use acidic or alkaline solution touch the product, avoid to generate the chemical reactions.