On November 18, 2016, Weihai Dichuang Import and Export Co., Ltd. and Chinese Academy of Sciences expert *** jointly developed the first fishing rod containing graphene. After the efforts of domestic graphene experts and companies, it was finally Manufactured domestically patented graphene fishing rod - "Blue Shark K70". It was subsequently used in related products such as Blue Shark Rod k80, Blue Shark Rod K90, Dean Fishing Rod Blue Fin, Dean Fishing Rod D30, Dean Fishing Rod Dean Legend and other brands owned by Dichuang.