Astro-century Education&Technology Co.,Ltd engages in planning, design, production, and distribution of supplementary teaching books for primary, junior high and high schools in China. It offers teaching supplementary books such as synchronous learning, test preparation, special topics, tool references, teaching and research lesson plans, etc. The company also provides bookstore, online and offline learning educational products and services. It offers its products under the Zhihong Optimization brand name. Astro-century Education&Technology Co.,Ltd was founded in 2004 and is based in Zibo, China.