GB/T 35780.2-2017顾客联络服务第2部分:使用顾客联络中心服务的委托方要求国家标准
英文:Customer contact service—Part 2: Requirements for clients using the services of customer contact centres GB/T 35780.2...
英文:Customer contact service—Part 2: Requirements for clients using the services of customer contact centres GB/T 35780.2...