ULEMA 泓观五金 !气动干磨机 多能打磨机 3寸/4寸/5寸/6寸砂纸机 GRINDING DEPENDS ON WHETHER YOUR SCRATCH IS FINE OR NOT.THE FINER IT TAKES THE LESS TIME IT TAKES TO POUSH IT.THE MORE THE SAMPLE CAN SHOW ITS TRUE TISSUE DURING SUSSEQUENT EROSION CAUTION 0D城E7 动力强劲 偏心轴承 全钢机芯 吸尘设计 抗摔机身 EAA 多种款式