Ultramid A3HG5 BK00565 机器/机械部件PA66料 ¥37.00 Ultramid A3HG6 HR BK23591 标准黑PA66 ¥42.00 Ultramid A3HG6 HR 抗水解PA66塑料 ¥41.00 阀门/阀门部件材料 Ultramid A3HG7 BK00565 ¥37.00 Ultramid A3HG7 UN00002 聚酰胺共聚物 ¥37.00 Ultramid A3K BK00464 可电子绝缘PA66料 ¥40.00