Does the subject want to ask "how many hours does the main person in charge of the production and business operation unit receive safety training every year?" Not less than 12 class hours. According to the Provisions on Safety Training of Production and Business Units, it can be known that the initial safety training time of the principal responsible persons and safety production management personnel of production and business units shall not be less than 32 hours, and the annual safety training time shall not be less than 12 hours. Production and business units refer to units engaged in production and business activities in People's Republic of China (PRC), including industry, mining, commerce and trade.