Shenzhen Jianhe Chengda Technology Co., Ltd. (hereinafter referred to as Jianhe Chengda) is a high-tech enterprise mainly engaged in the manufacturing of smart cards and RFID tags. The company's products include contact IC cards, induction IC cards, dropper cards, low-frequency RFID tags, high-frequency RFID tags, ultra-high frequency RFID tags, etc. In 2012, Jianhe Chengda was established, with an annual production of 50 million smart cards and RFID tags, and its products are exported to more than 100 countries and regions. Smart cards and RFID products are widely used in various industries and fields of the Internet of Things, such as transportation, security access control, attendance cards and supermarkets, catering, tourism, entertainment, water and electricity, archive and book management, automated physics, anti-counterfeiting and traceability.