The "Chemical Substances Encyclopedia" is an iPhone app developed by Shenzhen Aiyi Information Technology Co. Ltd. This educational reference app aims to provide users with knowledge about chemical substances. It focuses on promoting occupational disease prevention, enhancing workers' awareness of occupational health, and strengthening education on occupational disease prevention laws and regulations.

With "Chemical Substances Encyclopedia," users can learn about occupational disease hazards in the workplace, understand the consequences of these hazards, and correctly utilize and maintain occupational disease protection equipment and gear. This app empowers users to enhance their self-protection capabilities and be well-informed about occupational health and safety measures.