... 2,Anti-slip, non-toxic, durable 3,commercial rubber sheet 4, 3mm, 4mm, 5mm, 6mm thickness round dot ... sheet1. Round button rubber mat, also called dot rubber sheet, a coin-shaped bump on its surface, coiled ... , underground passage, public walkway, pharmaceutical plant, purification plant, lab, shipping company, electronics plant, computer room, power plant, museum, library, cinema, auditorium, etc ...