Please introduce the R&D/production/sales of the company’s new energy vehicle intelligent chassis assembly products?

Zhongding Shares: Thank you for your attention. The company's intelligent chassis system is based on the NVH vibration and noise reduction system. In the direction of developing lightweight assembly products, it is equipped with the world's leading air suspension system; 1. Rubber vibration and noise reduction system Zhongding Shock Absorption, a wholly-owned subsidiary of the company, has been deeply engaged in automobile vibration reduction systems and has many patents in products such as bushings, top link plates, engines and motor suspensions. After the company acquired Germany's WEGU, its core product, silicone dynamic vibration absorption technology, provided a fast and efficient vibration and noise solution for the automotive field, and it was at the forefront of the global industry in the field of rubber vibration and noise reduction. 2. Lightweight chassis system In recent years, the company has been vigorously developing chassis lightweight system assembly products. The forged aluminum control arm assembly project has made breakthrough progress and obtained a Mercedes-Benz designated book. At the same time, its subsidiary Sichuan Wangjin Company, whose core technology is the ball joint hinge assembly product, is the core safety component and performance component of the chassis system. It has world-leading technology and a very high technical threshold. In addition to the chassis system, the company has also made breakthrough progress in magnesium alloy lightweighting, and obtained the magnesium alloy assembly bracket project of General Motors' new energy pure electric pickup truck in the United States. 3. Compared with the traditional steel automobile suspension system, the air suspension system has many advantages. The most important point is that the elastic coefficient of the spring, that is, the hardness of the spring, can be automatically adjusted according to the needs. According to the different road conditions and the signal of the distance sensor, the driving computer will determine the change in the height of the vehicle body, and then control the air compressor and the exhaust valve to automatically compress or extend the spring, thereby reducing or increasing the ground clearance of the chassis to increase the stability of the high-speed vehicle body or the passability of complex road conditions. The air suspension system makes a car have both the comfort of a sedan and the handling performance of an off-road vehicle. The air suspension system includes an air compressor, a control unit, a multi-system sensor, an air spring, etc., and the value of a single set is about 10,000 yuan. In 2016, the company acquired Germany's AMK and entered the field of automobile air suspension systems and motor electronic control systems, which was the starting point for the company to enter the direction of automotive electronics. AMK is a high-end supplier of air suspension systems, motors and electronic control systems. Especially in the field of air suspension systems, AMK is one of the top three leaders in the industry and supplies world-class OEMs such as Jaguar Land Rover, Volvo, Audi, Mercedes-Benz and BMW. Due to the stability requirements of the chassis system of new energy vehicles...