According to the demand of market FAPAI OPTICAL puts out the lens of whole new technology Japan super-hard coated resin lens 
        In the past, the ordinary resin lens relatively low in hardness, in using at ordinary times, for the friction of the dust or the sand will cause the lens to wear and tear, it is easy to turn into the scratch on the lens surface, influence eyesight
 Japan super-hard coating of FAPAI OPTICAL adopts nanometer grade coating technology that Japan develops newly. it make lens have water character while possessing the oil character, for coating in the rank of nanometer, it make surface molecule combine closer and  improve the hardness of surface greatly, Meanwhile have waterproof, anti-ultraviolet and radiation-proof function.

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Hard and wear-resisting 　　Japan super-hard coated resin lens of FAPAI id more than 20 times harder than ordinary resin lens, 3-5 times harder than ordinary t hard coated lens. It makes the service life of the lens lengthen greatly.   Dustproof and waterproof 　　Japan super-hard coated resin lens of FAPAI carries on waterproof and dustproof dealing on the surface, make lens difficult to enclose dust and water stain, wash and maintain convenient.   Wipe gently bright and clean as new　　 Japan super-hard coated resin lens of FAPAI contains hate dirty factor MgF2 on surface. Slip degree of surface is 3-4 times higher than ordinary lens wiping greasy dirt only need gently wiping. It is clean as new.