What percentage of the company's revenue is from security products? Is it self-developed or sold on behalf of others?

TransInfo: Hello, thank you for your attention. According to the 22nd annual report, the company's total revenue was 7.003 billion yuan, the smart transportation business (excluding the contribution of the subsidiary's video products) achieved a total operating income of 1.875 billion yuan, and the smart Internet of Things business (including the sales of some Internet of Things products in the field of smart transportation) achieved revenue of 5.128 billion yuan. The smart Internet of Things business is independently developed.