Johnson Endura Industrial Tiles Are tough, sturdy, acid and alkali resistant tiles Have a very large breaking energy and don't give way less than heavy load of goods, equipment, forklifts and automobiles. Accessible in practical sizes of – 30x30cm, 20x10cm, 20x20cm and thickness of 12 mm, 15mm and 20 mm https://www.camp-manufacturing.com/heavy-duty-plastic-interlocking-industrial-floor-tiles/