Principles for site selection:

1. The factory site should be located in an area where raw materials, raw material supply, and product sales are convenient, and where there are good cooperation conditions in storage and transportation, mechanical maintenance, public works, and living facilities.

2. The factory site should be located near a place with sufficient water supply, good water quality, and sufficient power supply. 3. The factory site should be located in a place with convenient transportation. 4. When selecting a factory, attention should be paid to saving land, not occupying or occupying less arable land. The area, shape, and other conditions of the factory should meet the needs of reasonable layout of the process flow, and appropriate development space should be left. 5. When selecting a factory, attention should be paid to the local natural environmental conditions, and a pre evaluation should be made of the impact of the factory on the surrounding environment after it is put into operation. The construction sites of the factorys production and living areas should be selected simultaneously.

Generally speaking, factory areas should avoid being built in the following areas:

1. Mineral areas with mining value. 2. Dangerous areas prone to floods, mudslides, landslides, etc. 3. Areas of third grade self weight collapsible loess with significant thickness.

4. Earthquake prone areas and earthquake prone areas with a basic intensity of 9 degrees or above. 5. Areas that have an impact on the use of airports, radio stations, defense lines, etc. 6. Historical relics, biological conservation, and scenic tourism areas.