These are not very practical.

Let me tell you a few better ones, depending on how big your batch size is.

If it’s a big one, 1. You can find Zhejiang Jinyi Industrial, which is famous all over the country and the world. Its products are relatively expensive, but the quality is particularly stable. His subordinates are tall The company specializes in making standard automotive parts, and there are no quality issues. 2. You can find Ningbo Donggang. Its grade 10.9 bolts are also very good. The quality and price are quite suitable. They are now relatively good in China. 3. Shanghai Hardiway, this manufacturer directly provides standard parts to the public. The price is relatively cheaper and the quality is okay. It is a little bit worse than the previous two companies in terms of scale and quality. 3. There are also those from Ning Li, which are cheaper but of average quality. 4. Kowloon standard parts are of average quality and the price is okay.

There are many manufacturers on the market, but when used in cars, I recommend using ones with relatively stable quality. If something goes wrong, it will be difficult to deal with. There are also many trading companies on the market that claim to be able to produce products even though they do not produce them at all. In fact, they are all outsourced processing. You need to see clearly and be careful not to be deceived.

There are many more suggestions I gave you above. These are relatively good ones. I hope my suggestions will be helpful to you.