The car and truck wash refers to the industry that provides cleaning, washing, and detailing services for cars and trucks on a commercial scale. This market caters to both private vehicle owners and commercial fleet owners who require regular cleaning and maintenance of their vehicles. Car and truck wash services can include various types of cleaning methods, such as handwashing, automated washing, pressure washing, steam cleaning, and waxing, to ensure a thorough cleaning of the vehicles. These services are typically offered at car wash facilities, gas stations, auto dealerships, or mobile services that can be delivered directly to the customer's location.

Automotive retreaded tires, also known as remolded or reconditioned tires, are used tires that have undergone a process to replace the worn-out tread with a new layer of rubber. This process involves carefully removing the old tread from the tire casing, inspecting the casing for any damage or defects, and then applying a fresh layer of tread using specialized machinery.

An automotive camless engine is defined as an engine configuration wherein the poppet valves are operated using pneumatic, electrohydraulic, or electromagnetic actuator systems instead of conventional cams. The intake or exhaust valves are operated using this camless arrangement of the camshaft, which incorporates the use of springs or other means. This type of engine configuration has been recently developed by engine designers and developers for achieving optimum performance and fuel efficiency in addition to reduced carbon emissions.

2023 年，A 股市场经历了国内外经济预期的分化与波动，主要指数普遍调整，行业快速轮动，超额收益集中在产业景气边际改善或产业催化较多的 TMT、汽车、机械制造等科技成长板块，权益市场投资逻辑从自上而下转变至自下而上。截至 2023 年 12 月 31 日，A 股主要指数2023 年普遍调整，上证指数、创业板指分别下跌 3.7%和19.4%。行业上，TMT、汽车 为主导的科技成长板块表现居前，相对 Wind 全 A 取得明显超额收益，而房地产及地产链、消费板块的表现相对承压。