Anti-counterfeiting code According to Tianyuan Langjian official website, every fishing rod produced by this company is equipped with anti-counterfeiting code, and users can distinguish the authenticity through the anti-counterfeiting code. Langfeng is one of the classic fishing rods of Wuhan Tianyuan, a famous brand of fishing tackle. It was founded in 2002 by two masters, Deng Gang and Xu Yinzhou.