Chapter 30 (2/2)

”Hello host, the technology mall system is just an auxiliary system, so the system does not have the ability to store items.

However, the host can put the energy coins in your store. As long as it is something in your store, including the energy coins, no one can take it away without your permission, even the manager of the technology mall. ”The system replied coldly.

After listening to the words of the system, Wang Bin still had doubts at this time, that is, how William just made these energy coins appear directly in his own hands, and he didn't think William would put the energy coins in reality. After all, it's safer to put them in reality than the technology mall.

Then, Wang Bin opened the drawer of his glass counter, put the two energy coins in it, and then asked the system, ”by the way, the system, if I want to contact Xu Zhenming who has signed a contract with me before, how can I contact him?”

”Host! You can contact Mr. Xu Zhenming through the system!” the system replied.

”OK! You can contact Xu Zhenming immediately and ask him to come to my store. I have something to ask him!” Wang Bin said.

Within a few seconds, the system told Wang Bin that Xu Zhenming had been contacted and that he had received the information from the system.

Sure enough, when the system told him that Xu Zhenming had been contacted, a figure suddenly appeared at the gate outside his shop, and then immediately came to Wang Bin's shop, and this person was Xu Zhenming whom Wang Bin asked the system to contact.

”Hello, Mr. Wang! I don't know what you told me about coming here. Is it about using your glass to make ball screw? Has it landed?” Xu Zhenming asked Wang Bin immediately after entering Wang Bin's Tiangong technology store.

”Mr. Xu! I haven't got any good news for you yet. After all, it's only one day past. I called you here this time to ask, Mr. Xu, what precision grade of screw rod you want?” Wang Bin asked.

Xu Zhenming did not answer directly, but directly asked Wang Bin about the precision level of his world. After all, he still knows nothing about the precision level of Wang Bin's world, so he can't say anything.

”Mr. Xu, in my world, there are strict grades for screw rods, which are divided into seven grades: P1 to P5, plus P7 and P10. Among them, P1 has the highest precision and P10 has the lowest precision.

However, due to the problem of equipment, I can't produce screw rods below P2, because even in my world, not everyone can buy machine tools or machining centers with such precision.

So even if our glass can be processed into ball screw, its accuracy can only reach level 3 or 4. Of course, the specific situation will depend on the future situation, ”Wang Bin said.

”Mr. Wang, I don't know the specific accuracy of P3 and P4 ball screws?”

”In the specific precision level of my world, take any 300mm long screw, that is, no matter how long your ball screw is, take any 300mm section, and the accuracy is within the accuracy guaranteed in the specification. P1 is 4 microns, P2 is 6 microns, P3 is 9 microns, P4 is 12 microns and P5 is 23 microns.” Wang Bin said.

After listening to Wang Bin's words, Xu Zhenming didn't answer immediately. After thinking about it, he said: ”yes, whether it's P3 or P4 precision screw rod, it's enough for my world. Of course, the higher the precision, the better.”