Customer service stations plan two service centers in China (Beijing and Shenzhen). They are responsible for analyzing and serving customers in radiation areas. Specifically bounded by the Yangtze River, Beijing Service Team serves customers north of the Yangtze River; Shenzhen Customer Service Team is responsible for customers south of the Yangtze River. Covering the whole country, after receiving customer information, we must arrive at the customer service site within 24 hours.