This question is not easy to answer, and it can be roughly explained as follows. China NdFeB enterprises should have been industrialized in 1989 at the earliest, and now there are more than 200 large and small enterprises. In 2006, Shanxi, Ningbo and Beijing-Tianjin-Tangshan industrial bases were formed. Now factories are developing near raw materials, and Baotou and Jiangxi have a strong development momentum. At present, there should be nearly 80,000 tons of blank production capacity in China.

In terms of equipment and performance, it can be divided into the following stages:

1, mainly tubular furnace and ball milling stage: in the early stage of development, tubular furnace was basically eliminated by 1995, and its performance was 30.33.

2. Sintering furnace and jet mill stage: the mainstream of the factory in the second half of 1990s, the performance is generally 38, 40, individual elements are added and strictly controlled, and the output can reach 45.

3. High-performance stage represented by hydrogen furnace, chip breaking furnace and chip throwing furnace: This process has been the mainstream of the factory since 2005, and the general performance can produce 48-grade products. Of course, the same jet mill, press and sintering furnace have not changed much, but the improvement is also great.

Now, personally, the best and highest pure performance is Zhongbei Company, and Yun Sheng and Sanhuan Konida can produce VCM films.

Pure personal opinion, don't spray if you don't like it.