qcr0.5-0.2-0.1铬锆铜 qcr0.5-0.2-0.1铬铜 qcr0.5-0.2-0.1铬青铜 qcr0.5-0.2-0.1铬青铜线 qcr0.5-0.2-0.1铬青铜管

qcr0.5-0.2-0.1铬青铜带 qcr0.5-0.2-0.1铜板 qcr0.5-0.2-0.1铜套 0.5-0.2-0.1铬青铜 铬锆铜棒