NC 57-57-1985 Cafeterias for Easily Digestable Foods Classification《快速消化食物自助餐厅 分类》.pdf

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NF T54-801-1992 Plastics Trays for self-service restaurants Sspecification and test methods 《塑料制品 自助餐厅托盘 规范和试验方法》.pdf

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