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  seal dingli wrote a new blog entry:

  

  Custom Pet Plastic Strapping At Wholesale Price Black Spot Solu

   
  Reasons for black spots on the surface of the steel strip
  Reasons for Black Spots on Steel Strapping Seals
  1. Surface roughness of steel strip: If the surface roughness is obvious, the gap between the steel coil layer and the layer interface wil...

  • October 17, 2022
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  • October 17, 2022