28-04-2020

The new three board is layered and implemented in ...

Abstract A few days ago, the National Stock Conversion Company formulated the "Notice on Work Arrangements for Regular Adjustment of Market Stratification in 2020" ("Notice"), wh...

Click To View

27-04-2020

Russia exports 38.6 million carats of diamonds in ...

The Russian exporter's website reported on April 23 that in 2019 Russia exported 38.6 million carats of diamonds, a decrease of 12.7% compared with 2018, and the total export was US $ 3.8 billion, a...

Click To View

27-04-2020

Analysis of the impact of the new crown epidemic o...

Compared with SARS, this new coronavirus is more infectious, superimposing the factors of the Spring Festival, impacting concentrated consumption, and increasing the downward pressure on China's eco...

Click To View

21-04-2020

Buffing, grinidng and polishing

"buffing"also known as rough grinding. Refers to a process in which the damaged surface of a tyre is worn off over a large area to expose a new rough surface, so that the new tread and the old tyre ...

Click To View

13-04-2020

Selection of paper base and cloth base

If the workpiece is flat, you can choose the paper base coated abrasive tool, otherwise it can lead to bursting, disconnect, if the workpiece is curved, concave and convex, the cloth base coated abr...

Click To View