Guangzhou Yuyin Technology Co., Ltd., KingTeller, was founded in 2001 with a registered capital of 760 million yuan. It is a high-tech enterprise dedicated to assisting various financial institutions in establishing strong financial trading networks, specializing in the research and development, production, sales, and service of financial self-service equipment and software, and providing various professional solutions for financial services. In November 2007, Yuyin was listed on the Shenzhen Stock Exchange.

At present, the production capacity and sales scale of Yuyin ATM equipment are among the top in domestic ATM manufacturers. Ensuring excellent quality, adhering to research and development innovation, providing high-quality services and perfect overall solutions are important business cards for Yuyin to become a professional financial service outsourcing provider

Yuyin is currently the only privately-owned listed company in the financial self-service equipment industry, and has won multiple honors such as "Guangdong Province Integrity Demonstration Enterprise", "Guangdong Province Top 500 Enterprises", and "Guangdong Province Top 100 Manufacturing Enterprises". At present, Yuyin has become a shortlisted purchaser for the head offices of China Construction Bank, Industrial and Commercial Bank of China, Bank of China, and the General Post Office. Its various businesses are centered around the Pearl River Delta and radiate throughout the country. At the same time, Royal Bank has laid out and planned for the international market and achieved strategic results. ATMs have been exported in bulk to more than 30 countries around the world, including Southeast Asia, the Middle East, Europe, and Africa