Bulk inventory refers to the material goods that can enter the circulation field, but not the retail link, and have the commodity attributes for industrial and agricultural production and consumption. In the financial investment market, bulk commodities refer to homogeneous, tradable commodities such as crude oil, nonferrous metals, agricultural products, iron ore and coal, which are widely used as industrial basic raw materials. Including three categories, namely energy commodities, basic raw materials and agricultural and sideline products.

There are about 20 kinds of agricultural by-products, including corn, soybeans, wheat, rice, oats, barley, rye,

Pig breast, live pig, live cow, calf, soybean powder, soybean oil, cocoa, coffee, cotton, wool, sugar, orange juice, rapeseed oil, etc. Among them, soybean, corn and wheat are called the three major agricultural futures.

9 kinds of metal products: including gold, silver, copper, aluminum, lead, zinc, nickel, palladium and platinum.

5 kinds of chemical products: crude oil, heating oil, unleaded gasoline, propane, natural rubber, etc.

Commodities that can be traded in China are: Shanghai futures: copper, aluminum, zinc, natural rubber, fuel oil and gold; Dalian futures: soybean, soybean meal, corn, soybean oil, palm oil and plastics. Zhengzhou futures: hard wheat, strong gluten wheat, sugar, cotton, PTA, vegetable oil.