PU material for athletic track &field The environmental protection andstrong sticks , ... size to be 0.5~1.5 mm; Two-component PU 2:1 material ratio is 2:1, EPDM granule and ... must pay special attention. Mixing materials personnel should note: First open the paste barrels, with mixer, and then the initial agitate ... town ,Jiangyin ,Jiangsu ,China ,214411 Tel/ Fax:+86-510-86315308 PU 1:2 track spray coating