Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
At first glance: There are no flaws on the surface. Sometimes the brand -name balls bought by the supermarket are only four or fifty dollars. Often there are flaws on the surface. Although it does not affect use, it is best to use it.
Second news: Good materials have a fragrant leather flavor.
Three press: good balls, the lack of breath can not be pressed, otherwise the bad ball is full, press a pit;
Four: The ball that is too light and too heavy is not good, but the people who can't get out of the ordinary people must know often;
Five bombs: let the ball fall freely from the top of the head, see if the bouncing is straight, whether there is an oblique jump, on the flat ground, it should be stopped several times and stopped in place instead of rolling away. Whether height is under your waist.
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