Coffee shops buy some food from supermarkets (no detailed information), which are included in the inventory items.

China does not clearly stipulate the retirement age of household appliances, so many household appliances are not marked with safe use period. The International Standard for the Service Life of Household Appliances stipulates that:

Color TV: 8- 10 year;

Electric iron: 9 years;

Black and white TV: 10- 12 years;

Electric heater:18;

Electric blanket: 8 years;

Rice cookers: 10 year;

Refrigerator: 13- 16 years;

Video recorder: 7 years;

Personal computer: 6 years;

Electric fan: 16 years;

Outdoor barbecue: 6 years;

Gas range: 16 years;

Electric water heater: 12 years;

Washing machine: 12 years;

Telephone recording system: 5 years;

Hair dryer: 4 years;

Microwave oven: 1 1 year;

Electric shaver: 4 years;

Range hood: 7 years;

Air conditioning: 10 year.