It is a kind of heavy engineering machinery widely used in construction, mining, road construction and other fields. It is mainly used for digging soil, sand, coal and other bulk materials, and can also be used for crushing, grabbing and carrying heavy objects. It is composed of key components such as power system, working device, slewing mechanism, walking mechanism and operating system. The working device includes a boom, an arm and a bucket, which is driven by a hydraulic system to realize various functions such as digging, loading, and leveling. Usually equipped with high-performance diesel engines to provide strong power, while using advanced hydraulic systems and electronic control systems to improve work efficiency and operating comfort.

Is a kind of heavy construction machinery, mainly used for land leveling, digging, pushing soil, sand and other bulk materials. It is composed of power system, transmission system, walking system and working device. The main working device is the bulldozer, also known as the "shovel" or "push knife", used for bulldozing, leveling, backfilling and other operations. It is usually provided by a diesel engine, which ensures a strong power output and good adaptability. The walking system includes tracks or tires. The track type bulldozer is suitable for soft or uneven ground, and the tire type is suitable for hard roads. Widely used in construction, road construction, land development, farmland transformation, etc.

It is a heavy engineering machinery mainly used for loading, unloading, bulldozing, leveling and other engineering operations. Renowned for its powerful power, efficient operational performance, and outstanding durability. Caterpillar Inc. is a leading global manufacturer of construction machinery and engines, with products widely used in fields such as construction, mining, and road construction. Adopting advanced hydraulic systems and electronic control technology to ensure precise operation and rapid response. Its design emphasizes ergonomics, with a spacious and comfortable driver's cabin and an intuitive and easy-to-use interface, greatly reducing the driver's labor intensity. It is an indispensable and important force in engineering construction.

The full name is Caterpillar excavator, which is a series of heavy-duty excavation equipment produced by Caterpillar Inc. in the United States. The company is a leading global manufacturer of construction and mining equipment, renowned for its high quality, durability, and advanced technology. CAT excavators are widely used in construction sites, road construction, mining and other fields, and can efficiently carry out earthwork excavation, loading and handling operations. It is favored by users for its powerful power, excellent handling, and high reliability. Equipped with advanced hydraulic and electronic control systems to ensure precise and efficient operation.