采购文档，合同变更控制系统，支付进度表，合同管理计划。
C. Procurement Documentation, Contract Change Control System, Payment Schedule, Contract Management Plan.
采购文档，合同变更控制系统，支付系统，合同。
D. Procurement Documentation, Contract Change Control System, Payment System, Contract.
专业从事控制系统设备和传动产品资源整合，集解决方案、采购、加工、销售、售后为一体的全面整合型服务企业。
Specializing in control system equipment and transmission products, integration of resources, set solutions, procurement, processing, marketing, sale as one fully integrated service enterprises.
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