PU material for athletic track &field The environmental ... be 0.5~1.5 mm; Two-component PU 2:1 material ratio is 2:1, EPDM ... for the first time’s left prominent particles cut out, low-lying processing, the place to reach even, ... other people to a construction area. Every time out clean, material and note spraying speed, will report ... ,China ,214411 Tel/ Fax:+86-510-86315308 PU 1:2 track spray coating