Qingdao Chengyang District Shandong No.20 精密钣金 No.20 铸件 No.27 机床夹具 No.27 通用夹具 No.29 工具铣床 No.29 精密数控车床 No.29 夹具 No.29 铣床光机 No.29 钻床 No.31 钣金件 No.32 数控/CNC车床 No.34 管材管件 ISO9001认证