Its grain diameter is 0.5-1.5mm or so. It can be mixed in artificial lawn ground cushion coat, so the lawn's adaptive capacity for environment can be enhanced, it is to say it is safer for use regardless of rain, snow etc., even can be used in extreme area such as high temperature or extreme cold. The coat mixed with plastic particle will not escape powder, its capacity of non-watertight, breath ability and wearing is enhanced, so the article lawn cannot be crazed easily, And cannot frothing and take off. The particle has not poison and radiation, so it is safe.