GB/T 19012-2019质量管理顾客满意组织投诉处理指南国家标准
英文:Quality management—Customer satisfaction—Guidelines for complaints handling in organizations GB/T 19012-2019介绍: 国家标准《...
英文:Quality management—Customer satisfaction—Guidelines for complaints handling in organizations GB/T 19012-2019介绍: 国家标准《...