In addition, compare the hardness of CJ8000 and hurricane 3. Double happiness hardness test method is rare in the world. Double happiness's hardness detection probe is sharp, while the probe widely used in the world is round, so we can see that the hardness of double happiness's sea surface is not too high, but 39 degrees of double happiness may be harder than 43 degrees in Rio, and there is no universal conversion formula between them, so we can't say so. In addition, fast-break athletes should actually use a softer sponge (with less sticky rubber), because a soft sponge can "eat" the ball, which is beneficial to control. Because it is soft, it can bear greater elastic deformation in an instant, which will speed up the initial rebound, that is, speed up the ball! The sponge of loop players is harder (with sticky rubber), which increases the rotation when pulling the ball. So your other problem may be the hardness of the sponge! As for the parallel imports you mentioned, this should not be a problem. Parallel imports are not fakes. Parallel import generally refers to goods that have not entered the market through formal channels. Parallel imports and licensed products are the same in manufacturing level and application technology, because they are all produced according to the licensed technology. Who knows which racket will become parallel imports! If it is stiga's defective products, it is unlikely, because manufacturers such as stiga and Butterfly are very strict about the handling of defective products. If too many defective products enter the market, it will be a disaster for a company like them! If you bought this racket on Taobao, you should be suspicious. Many profiteers on Taobao can even be said to be liars, often deceiving consumers with slogans such as foreign trade goods, original goods, tail goods and high-quality defective products! Table tennis equipment is a very interesting primary school, with many interesting places. I used to be an avid equipment enthusiast, but later I stopped having a fever for the simple reason of "burning"!
Knowledge contest slogan _ knowledge contest slogan is domineering and rhyming;
1. Go all out and make achievements on the field.
2.