| http://www.w3.org/ns/prov#value | - The article with the foamed surface of the present invention is an article comprising a body and a superficial layer formed in a surface of the body, the superficial layer including small pores with small diameters and large pores with large diameters, wherein the article is made of a plastic, a part of the small and large pores are open pores which are formed in the surface of the superficial lay
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