You can invoice 13 points for what you buy.

Industrial production of raw materials and fuels, machinery and equipment, medical instruments and medicines.

1. Raw materials and fuels for industrial production: such as steel, copper, aluminum, coal, petroleum, etc.

2. Mechanical equipment: mechanical equipment and electrical equipment used for production, processing, manufacturing and transportation.

3. Medical devices and medicines: such as medical devices, Chinese herbal medicines, western medicines, health care products, etc.