Changhong nylon cable ties are the most widely distributed in the market, and there have indeed been counterfeits. Our company has also investigated and prosecuted two companies. Changhong nylon cable ties are manufactured by Changhong Plastic Co., Ltd. in China and are trademarks of CHS. The company's products are currently sold in three levels: A-level (national standard series), B-level, and C-level (non-standard series). Please confirm this when purchasing. If it is difficult to confirm the accurate CHS blue trademark and CHS mold engraving for cable ties, you can contact our company directly for a correct answer. Thank you for your understanding, attention and support of Changhong. Thanks!