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PUT3.2/PUTL4/PUTY6/PUTYL10/PUTN8/PUTNL10/PUTHP12/PUTHPL16-20
PUTY4-10-B PUTY6-20-C PUTY8-20 PUTY10-10 PUTYL8聚氨酯软管
橡胶管 PUTY PUTYL4 6 8 10-10 20 0.5 1 2 3 4 5 6 7 8 9 -B C