1. The supplier shall provide as detailed as possible the capital, business license, product, production scale, credit certification and other relevant reports. The more detailed the information, the better.

2. The purchaser will make a detailed classification of the information provided by the supplier, classify these customers into what kind of customers, and give an internal analysis of whether it is worth supporting and whether the funds are worth affirming.

3. The purchaser looks at the supplier's factory. Check whether the scale of the factory is consistent with the basic information provided by them. If there is any inconsistency, cooperation will not be considered.

4. The purchaser requests the sample to the supplier. See if the size, specifications and other parameters of the sample meet the requirements.

5. Buyers should pass the technical analysis and have the analysis results of the inspection department. The inspection includes whether the price, quality and other requirements are met.

6. If the requirements are met, the purchaser issues a review notice to the supplier. Suppliers that meet the requirements can enter the buyer's supply chain. For the best suppliers, they must first enter the buyer's supply chain in order to be qualified to provide them with products and services.

7. Buyers and suppliers for the initial commercial negotiations, the normal negotiation time in three months.

8. The parties sign the contract.

9. The supplier begins to supply small quantities of the product to the purchaser.

10. The purchaser reviews the supplier's small batch products. All small batch products must be strictly tested.

11. If the low-volume product is approved, then this supplier will be added to the purchaser's product catalog.

12. When suppliers join the buyer's product catalog, each catalog needs to be reviewed by itself, and each place needs to be reviewed again. The whole process takes half a year. Credit issues are even more important.

13. There can be no mistakes in each process, and credit problems are not allowed.

14. After the above links have been successfully passed, they can become the supplier of this buyer. Entering their global supply chain is extremely demanding. If any link goes wrong, it will be possible to waste all previous efforts.