MCVODO polarizer, whether you visit the site, or dust outside, can personal care of your eyes.
MCVODO偏光镜，不管您在视察工地，照样沙尘室外，都能贴身呵护您的眼睛。
Placed outside the valve, must be covered with linoleum or Tarpaulins like rain, dust-proof materials.
放置室外的阀门，必须盖上油毛毡或者大雨布之类防雨、防尘物品。
Placed outside the valve, must be covered with linoleum or Tarpaulins like rain, dust-proof materials.
放置室外的阀门，必须盖上油毛毡或者大雨布之类防雨、防尘物品。
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