清远 地区光亮线91800-92100涨500马达铜84600-84900变压器铜86100-86400紫铜砖83400-83700杂线铜米87300-87600机件黄铜57800-58100机生铝17800-18100变压器铝17500-17800拆水箱铝16800-17100