1. Small household, large commercial, etc. The more common brands of grinding mills on the market include: Xulang, Jianzhi, Hongcheng, Leimai, Keda, Leimai, Huajie, etc.
2. Belton’s car disassembly tools are one of the better ones in China, and they have a good reputation. This tool starts up very quickly and is very efficient. They have more than ten years of experience, have a high safety factor, and have a wide range of application scenarios.
3. The flat ruler table comparison method is usually used to detect the straightness error of short guide rails in the vertical and horizontal planes.
4. The cast iron ruler is generally made of high-strength iron. Its working surface is scraped and ground to achieve the required flatness. The advantage of cast iron is that it has a relatively long service life. There is no problem in using it for hundreds of years, as long as the plane accuracy is maintained every year.
5. There are only about three or four domestic manufacturers, including: Shanghai Sanji, Shanghai Prima, Suzhou Taiste, Hangzhou Yuanfang, etc. Shanghai Sanji has the longest history in the EMC industry, and several other companies are similar.
6. I personally recommend that you take a look at the Hangzhou Kaifengtang Calligraphy and Painting Art Examination, where I study calligraphy. I think the calligraphy results of this institution are really excellent, and I heard that one student has obtained a bachelor's degree from Central American College. Ranked third in the major in the admissions exam and achieved quite good results.