UVA防护等级PA
Protection grade of UVA PA
防护等级
grade of flood protection
safety grade
protection degree
Grade of Protection
degrees of protection
protection rank
雷电防护等级
lightning protection level
lightning protection class
thunderbolt shield grade
lightning protection classification
Grade of thunder protection
反差控制紫外线防护护目镜
ultraviolet contrast-control safety goggles
外防护层
External protection coating
external protective coating
Oil and Gas Pipeline