Why can't some smoked badminton rackets see the mark on it?

It may be a counterfeit product in China. In recent years, it is difficult for ordinary people to identify the authenticity because the laser anti-counterfeiting trademark label is easy to forge. Now, it is changed to carve advanced and hard-to-forge double photoetching steel numbers on the conical surface of the racket handle and the racket shaft. However, some of pat's counterfeit products are labeled with vague false laser anti-counterfeiting trademarks (mostly oval), and pat is difficult to handle, and there is no factory number (steel number), or it is just a printed false steel number instead of lithography.

"Kumpoo" (クンン12503 ウ/xunfeng), a professional badminton brand of Japan, sells badminton rackets, badminton clothes, badminton shoes, racket bags, badminton strings, badminton socks, hand glue and other products. It has a development history of 7 years in Japan, with two badminton garment factories and a number of self-owned patents.