型号:HG57白色；
硬度：邵A87；无填料；
密度：0.60±2；
适用于精密光学玻璃、蓝宝石及半导体基板的高速或超高速抛光。可使被加工工件光圈更稳定，不塌边。各项性能指标与进口LP57相似。
产品主要规格有：640×640（mm）。产品厚度0.5（mm）~5.0（mm）。
Type:HG57;white;
Hardness:Shore A87±3;no filler;
Density:0.60±2;
It is suitable for high speed or even super high speed polishing precision optical glass,sapphire substrate and semiconductor substrate.It can make lens of processed part more stable and have no turned-down edge.All performance indicators are similar to imported LP57.