An automatic door, also known as an auto door, is a door that opens and closes automatically without the need for human intervention. These doors typically operate using sensors that detect the approach of a person or object, triggering the door to open.

The atomic clock market is primarily driven by advancements in timekeeping technologies and the increasing demand for precise time synchronization across various aerospace and defense applications. The atomic clock market has a diverse range of atomic clock solutions, with rubidium (Rb), cesium (Cs), and hydrogen (H), as well as Maser Atomic Clocks, being prominent types. • The aerospace and defense sector has emerged as a major end-user of atomic clocks. Defense industry use cases leverage atomic clock accuracy for applications such as combat aircraft, unmanned vehicles, armored vehicles, and naval ships. Space end-users rely on atomic clocks for satellite systems, space launches, and ground stations, which highlights the extensive adoption of atomic clock technology in critical sectors.

An automotive clutch release bearing, which is also known as a throw-out bearing, is a type of thrust bearing that helps in the engagement and disengagement of the clutch. The automotive clutch release bearing rides on the clutch spring and connects the release mechanism in the gearbox to the pressure plate. When the clutch lever is pressed, the clutch release bearing pushes up the pressure plate to engage the clutch disc. An automotive clutch release bearing is an indispensable component in most vehicles.

The automotive brake pad market is valued at USD 16.65 billion in 2022, and it is expected to reach USD 19.64 billion by 2028, registering a CAGR of around 3.25% during the forecast period of 2023-2028. • Increasing awareness about safety among consumers and authorities has led to significant developments in the automotive brake system, resulting in improved security and reduced accidents on the road. With further technological advancements, the market is expected to see even safer and more reliable brake systems

Bicycle gearing is a feature of the drivetrain that determines the rate at which the riders are peddling to the rate at which the drive wheel rotates. There is a shifting mechanism that allows the proper selection of the gear, which is effective in increasing the comfort of riding. For instance, top gear can be used for riding downhill, medium for a flat road, and low for uphill.

Bowling equipment encompasses all the essential gear utilized in the sport of bowling. This includes bowling balls, which come in a variety of weights and designs to accommodate different playing styles, as well as bowling shoes that are specifically designed to provide traction and support for bowlers. Additionally, bowling bags are used to transport and protect the bowling balls and other necessary equipment. Various accessories, such as wrist supports, finger inserts, towels, and other maintenance tools, are commonly utilized by bowlers to enhance their game. All this equipment is crucial in facilitating proper playing of the game and aiding players in maximizing their performance on the lanes.

Computer accessories are devices that enhance the features of the computer. They can be connected externally or internally to the computer system. Computer accessories are categorized into audio speakers, mouses, modems, web cameras, microphones, and keyboards.

2025 年风电行业投资主线聚焦四大方向：1）海风：政策松绑叠加招标放 量驱动深远海开发加速，海底电缆/基础产品升级开启新周期；2）陆风： 价格筑底企稳与大型化趋势深化共振，整机及铸锻件环节盈利修复弹性突 出；3）零部件：大兆瓦机型交付放量推升供需紧平衡，叶片/铸件等高价 值量环节进入量价齐升通道；4）出海：全球能源转型加速催生海外需求 扩容，中国整机商依托成本优势实现市场份额与盈利结构双升。四大领域 共同构建"政策-技术-成本-市场"多维驱动格局，奠定行业增长性高，确定 性强。

本轮电子行业上行周期的主驱动力，贸易摩擦下自主可控重要性 y] ] 凸显。截至 2025 年 4 月 30 日，根据申万行业分类（2021）标准， 478 家电子行业上市公司均已披露 2024 年年报，除中芯国际和华虹公 司外 476 家上市公司均已披露 2025 年一季报。整体来看，2024 年电 子行业实现营业收入 34801.2 亿元，同比增长 17.4%，实现归母净利 润 1379.1 亿元，同比增长 35.8%。1Q25 电子行业实现营收 8411.6 亿 元，同比增长 17.6%、环比下降 13.0%，实现归母净利润 353.56 亿 元，同比增长 28.2%、环比增长 22.0%，一季度同环比均实现快速增 长。

光伏&储能：能源局印发《关于促进能源领域民营经济发展若干举措的通知》鼓励大基地应用前沿技术组件，提高产 品应用技术门槛，是当前解决存量过剩产能问题最切实可行的手段；光储板块 24FY&25Q1 业绩总结：底部夯实，拐点 已至，储逆、辅材、主链中游 Q1 表现较好，静待抢装后“双底”拐点确认。