. Jiangsu Chengyin Technology Co., Ltd. (referred to as “Chengyin Technology”) specializes in technologies, products, and services related to stamp authentication and document traceability and anti-counterfeiting. The company has set a vision to eliminate fake stamps and forged documents from the world, build a traceability and anti-counterfeiting platform, and contribute to the development of a social integrity system. The company’s flagship product is the Chengyin Zhenzhang—a smart stamp designed for tracing the results and processes of stamp usage, based on “inkmark recognition” technology. The smart stamp market has begun to develop over the past two years and represents an emerging market segment that has yet to establish a clear market structure dominated by specific companies. However, Chengyin Technology’s “inkmark recognition” technology is a completely new and innovative approach. Currently, the final products and system platforms of Chengyin Zhenzhang have completed R&D and have entered the stage of market promotion and sales. Inkmark recognition technology is an innovative breakthrough both domestically and internationally, with no prior precedents. The company has already filed multiple applications for invention patents or utility model patents. Chengyin Zhenma is another product currently under development—a document anti-counterfeiting technology based on document medium characteristics, capable of recording and identifying unique features of paper documents. The product consists of terminal devices and a software service system, utilizing medium-characteristic recognition technology. It can be applied in government agencies, enterprises, and institutions to ensure document authenticity, identification, and certification throughout both online and offline document workflows, holding great potential for future application. The company is located in Changzhou City, Jiangsu Province—a historic ancient city in the picturesque Jiangnan region renowned for its outstanding people and beautiful landscapes. Welcome to the website of Jiangsu Chengyin Technology Co., Ltd. Our company is situated in Changzhou City, a culturally rich ancient city with over 3,200 years of history, boasting numerous scenic spots and historical sites. Our specific address is Room 1805, Building 2, Tianning Times Square, Tianning District, Changzhou, Jiangsu Province. The person in charge is Tu Weiping. Our main business includes intelligent stamp management platforms, anti-copying QR codes, smart locking stamps, and all-in-one printing and stamping machines. Registered capital of the company: RMB 2 million to 3 million. We supply intelligent stamp management platforms, anti-copying QR codes, smart locking stamps, all-in-one printing and stamping machines, and other products, truly creating value and saving costs for our customers, achieving “sustainable equipment and worry-free operation!”