This photo shows the exercise puzzle mats I bought. I did a search with key words I no longer remember. Several results popped up, includingflooring intended for exercise spaces. That stuff seemed perfect. I chose the extra-thick, 3/4″ squares because I wanted as much padding as possible ...
Meanwhile, powder is principally used as filler in rubberized asphalt [7,8,9,10], in building and construction and in concrete [7,9,11,12], as porous bitumen binders [4], in playground surfaces and trails for athletics [7,13] in automotive floor mats [7], and as filler for tires [...
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