
Food hygiene - Production and dispense of hot beverages from hot beverage appliances - Hygiene requirements, migration test; Text in German and English
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Food hygiene - Production and dispense of hot beverages from hot beverage appliances - Hygiene requirements, migration test; Text in German and English
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻