1. There are many sand machine manufacturers, such as great wall heavy instry, Zhuoya
mining machinery, tewo heavy instry, etc.
2. There are Shibang instry and other brands< Br > < br > it is a general question about which one is better, and the sand making machines proced by sand making machine manufacturers are similar. Generally speaking, the quality of sand making machines proced by manufacturers with strong strength and large scale of proction will be better, but the price performance ratio of sand making machines, the quality of sand making machines and perfect after-sales service should be considered comprehensively. There is no best sand making machine, only the most suitable sand making machine< It is very important to choose a good sand making machine for proction. Shanghai Shibang Machinery Co., Ltd. is a technology enterprise integrating R & D, proction, sales and service. For many years, we have been committed to mine crushing equipment, sand making equipment and instrial grinding equipment, providing high-grade aggregate solutions and complete sets of equipment for highway, railway, hydropower and other large engineering projects< Br > < br > for more questions, please consult our customer service< br>
3. There are many manufacturers of pebble sand machine, mainly concentrated in Zhengzhou, Luoyang, Shanghai, Shandong and other places in Henan Province. The brands include Great Wall heavy instry, tewo heavy instry, Zhuoya mining machine, etc. You can learn about it!
4. Jaw crusher or choose casting structure, the quality is more reliable, more cost-effective. Shandong Ruilong's casting jaw crusher procts cover many provinces and regions in China, and the export volume is also quite large. I suggest you go to the manufacturer and compare the manufacturer with the proct.
5. I use the jaw crusher made by Zhejiang Shuangjin, which feels good.
6. Raymond mill can grind more than 100 kinds of materials such as talc, feldspar, calcite, limestone, kaolin, bentonite and so on. It has formed an instrial base of Raymond Mill in Henan Province. There are many brands. It is recommended that you go to Zhengzhou Limai Machinery Co., Ltd. and Raymond mill has complete specifications.
7. meristem
8. In life, generally speaking, two people who have the same hobbies and similar personalities are very easy to become friends, because they can have a common topic and can easily resonate with one thing, so as to "cherish each other". But there is no absolute. They are the world's top two physicists, Yang Zhenning and Einstein. Once they meet, they should have a lot to say. Maybe they will rub new "sparks" in physics
coupled with language differences, Einstein was also older, so after talking for an hour and a half, he could not understand much, and it was very difficult to communicate. Although this meeting opportunity is undoubtedly very valuable, it did not gain much wisdom. He also expressed his regret that he could not take a picture with his idol
9. The problem of conditional probability
