How to classify grain enterprises as state-owned enterprises?

Grain enterprises include state-owned grain purchase and sale enterprises and other grain enterprises. State-owned grain buying and selling enterprises refer to state-owned grain enterprises at all levels (including state-controlled grain enterprises) that undertake the tasks of grain purchasing and storage by the state and governments at all levels and engage in the purchase, allocation, storage, wholesale and sales of grain ordered by the state, grain at protected prices, grain at negotiated prices, central and local grain reserves, grain import and export, etc.

Other grain enterprises refer to grain enterprises that, in addition to state-owned grain purchase and sale enterprises, operate military grain, disaster relief grain and reservoir resettlement rations.

Grain purchasing and selling reserve enterprises and grain depots of grain research institute have been reformed, which belong to commercial, wholesale and grain wholesale industries respectively. If you just store food on behalf of others, it belongs to the warehousing industry. Unless large grain depots are difficult, most of them rely on government subsidies to survive, because most of them are unprofitable, relying on rising food prices to make profits and lose more. This actually belongs to the service industry and serves the policy.

Extended data:

In 84 1 year BC, there were records of processing tools consisting of pestle and mortar in China, and later there were mills and stone mills. Water Conservancy, a complete book on agricultural policies, describes the coupling mechanism driven by waterwheels in 284 AD. Tiangong Kaiwu Fine Grinding explained that before 1637, rice milling technology and machinery had been preliminarily improved, and various processes such as hulling, coarse grain separation and rice milling had been formed.

According to the International Encyclopedia, in12nd century, air mill was used in Europe, and in18th century, coarse screen was used.

Steel roller mill originated in Hungary in the18th century, and was adopted on a large scale in 1870, and a milling process of 20 ~ 30 steps was developed. The tools used in grain processing in China are husker, Chu Jiu, rice mill, stone mill, hand screen made of bamboo mud, etc. At the beginning of the 20th century, rice huskers, rice mills, steel roller mills and rice milling processes were adopted.

After 1949, in order to improve the output of single machine, the "pre-milling method" and short-flow single machine milling technology were created and developed. After 1980, in order to improve the precision of the finished grain, the processing flow was appropriately extended. Compared with foreign countries, China's rice milling technology and equipment have higher rice yield and lower energy consumption. Grain processing includes the following four steps.

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