Parker变频器，派克气动元件，力士乐球阀，YUKEN泵，Parker骨架油封

PARKER工业自动化产品及传感器

PARKER 的工业自动化产品丰富多样，涵盖了驱动器、控制器、阀岛、三联件等，其传感器产品也具有种类齐全、性能可靠等特点，以下是一些相关产品介绍：

工业自动化产品

Compax3S 单轴伺服驱动器 / 控制器：如 C3S075V4 独立式伺服驱动器，额定功率为 6.2kVA，具有可扩展的技术功能，从具有电子 CAM 和 PLCOpen 功能模块的智能 IEC 61131 驱动器到基本的模拟转矩 / 速度 / 位置控制都可实现。

AC890 变频驱动器：是一种紧凑的模块化系统变频驱动器，用于控制开环和闭环单电机或多电机交流感应电机或伺服电机应用的速度和位置，功率可达 355kW。

P2M 工业以太网节点：允许与任何工业以太网网络进行简单且经济高效的连接，可将 Moduflex、H Micro 和所有五种尺寸的 H *** 阀连接到以太网网络。

P33 安全排气阀：旨在设备故障或电子停机状态下，从机械中安全地排出压缩空气。该产品采用双通道安全架构设计，安全等级达 4 类，性能等级为 e 级。

FRL 三联件组合：包括颗粒式过滤器、减压阀和油雾器三个模块，可提供高效的去除水分和杂质颗粒，***的压力调节以及大流量范围的成比例的油雾润滑。

传感器产品

SensoControl? 系列传感器：产品线丰富，符合工业测量和控制的技术标准，针对自动化技术和行走液压的特殊要求进行了改进，适合工业和工程应用的大部分产品线。包括 SCP01 迷你型压力传感器、SCP02 压力传感器 - 行走机械、SCPS01 电子式压力开关、SCP-EX 压力传感器 - 防爆系列等多种类型。

SensoNode? Blue 系列蓝牙传感器：基于工业物联网，具有紧凑、节能、无线等特点。包括压力传感器、温度传感器、湿度传感器、拉力应变器等，可准确跟踪关键资产和过程中的压力、温度和湿度水平的变化，通过安装有 Scout 移动软件的移动设备即可即时收集数据。

Service Master Plus 诊断测试套件中的传感器：该套件可测量、记录和分析任何液压或气动系统的关键系统数据，可存储 10 亿个数据点。套件包括压力传感器、流量传感器、温度传感器、转速传感器等，压力传感器使用颜色编码，与压力范围相对应，便于可视化。

PARKER Industrial Automation Products and Sensors

PARKER offers a wide range of industrial automation products, covering drives, controllers, valve islands, FRL units, etc. Its sensor products also feature a complete range of types and reliable performance. Below is an introduction to some related products:

Industrial Automation Products

Compax3S Single-Axis Servo Drive/Controller: For example, the C3S075V4 standalone servo drive has a rated power of 6.2kVA and scalable technical functions. It can implement everything from intelligent IEC 61131 drives with electronic CAM and PLCOpen function modules to basic analog torque/speed/position control.

AC890 Variable Frequency Drive: It is a compact modular variable frequency drive system used to control the speed and position of open-loop and closed-loop single-motor or multi-motor AC induction motor or servo motor applications, with a power capacity of up to 355kW.

P2M Industrial Ethernet Node: It enables simple and cost-effective connection to any industrial Ethernet network, and can connect Moduflex, H Micro, and H *** valves of all five sizes to the Ethernet network.

P33 Safety Exhaust Valve: It is designed to safely discharge compressed air from machinery in the event of equipment failure or electronic shutdown. This product adopts a dual-channel safety architecture design, with a safety category of Category 4 and a performance level of PL e.

FRL Unit Combination: It includes three modules: a particulate filter, a pressure regulator, and an oil mist lubricator. It can efficiently remove moisture and impurity particles, achieve precise pressure regulation, and provide proportional oil mist lubrication within a large flow range.

Sensor Products

SensoControl? Series Sensors: This product line is rich and complies with the technical standards for industrial measurement and control. It has been improved to meet the special requirements of automation technology and mobile hydraulics, and is suitable for most product lines in industrial and engineering applications. It includes various types such as SCP01 mini pressure sensor, SCP02 pressure sensor for mobile machinery, SCPS01 electronic pressure switch, and SCP-EX explosion-proof pressure sensor series.

SensoNode? Blue Series Bluetooth Sensors: Based on the Industrial Internet of Things (IIoT), they feature compact size, energy efficiency, and wireless connectivity. They include pressure sensors, temperature sensors, humidity sensors, tension strain gauges, etc., which can accurately track changes in pressure, temperature, and humidity levels in key assets and processes. Data can be collected instantly through mobile devices installed with Scout mobile software.

Sensors in the Service Master Plus Diagnostic Test Kit: This kit can measure, record, and analyze key system data of any hydraulic or pneumatic system, and can store 1 billion data points. The kit includes pressure sensors, flow sensors, temperature sensors, speed sensors, etc. The pressure sensors are color-coded, corresponding to pressure ranges for easy visualization.

Parker 密封件系列产品丰富多样，以下是一些常见的系列及产品介绍：

O 形圈系列：Parker 提供全面的 EPDM、FKM 和硅胶 O 形圈，符合 FDA、USP<87> 和 USP VI 标准，适用于生命科学等多种应用场景。此外，还有 ULTRA? FFKM 全氟弹性体 O 形圈，具有良好的耐化学性和热稳定性，能够承受高达 320°C 的温度。

精密车削垫圈系列：精密切割垫圈为众多静态应用提供了灵活设计和宽的密封面，其矩形几何形状方便客户定制密封产品尺寸，以适应特定应用的沟槽。

菱形密封系列：菱形密封提供强大的密封能力，确保在关键环境中的防漏性能。其节约空间、低限载等轮廓仿形设计提供出色的保持性、压缩性和弹性，适合用于医疗设备、诊断设备和流体管理系统。

Stat-O-Seals? - 600 系列：属于复合密封系统部门的特色产品，适用于具有挑战性的应用场景。

Thred Seals - 750 系列：是复合密封系统部门的产品，具体应用场景未详细说明，但从属于该部门产品来看，应是用于一些对密封要求较高的特殊场合。

旋转密封系列：Parker 能够提供旋转轴密封件，如油封、轴承隔离器和高速轴密封件等，其旋转密封解决方案为旋转应用中的轴密封提供了全面的覆盖，可满足 OEM 和 MRO 的需求。

真空密封系列：包括 O 形圈、平密封、定制密封和金属密封等。O 形圈有多种弹性体材料可选，适用于不同温度和化学环境；平密封适用于需要均匀压力分布的法兰真空系统；定制密封可根据特定应用要求设计；金属密封则可用于传统弹性体密封性能不足的高压力和高温度应用场景。

Parker Seal Product Series

Parker offers a rich and diverse range of seal products. Below is an introduction to some common series and their products:

O-Ring Series: Parker provides a comprehensive range of EPDM, FKM, and silicone O-rings that comply with FDA, USP<87>, and USP VI standards, suitable for various application scenarios such as life sciences. In addition, there are ULTRA? FFKM perfluoroelastomer O-rings, which feature excellent chemical resistance and thermal stability, capable of withstanding temperatures up to 320°C.

Precision Machined Washer Series: Precision-cut washers offer flexible design and wide sealing surfaces for numerous static applications. Their rectangular geometry facilitates customers in customizing the size of seal products to fit the grooves of specific applications.

Diamond Seal Series: Diamond seals deliver strong sealing capabilities, ensuring leak-proof performance in critical environments. Their contour-mimicking design, which saves space and requires low minimum load, provides excellent retention, compressibility, and elasticity, making them suitable for use in medical equipment, diagnostic devices, and fluid management systems.

Stat-O-Seals? - Series 600: As a featured product under the Composite Seal Systems division, it is suitable for challenging application scenarios.

Thred Seals - Series 750: This product belongs to the Composite Seal Systems division. Although its specific application scenarios are not detailed, given its affiliation with this division, it should be used in special occasions with high sealing requirements.

Rotary Seal Series: Parker is capable of providing rotary shaft seals, such as oil seals, bearing ***lators, and high-speed shaft seals. Its rotary sealing solutions offer comprehensive coverage for shaft sealing in rotating applications, meeting the needs of both OEM (Original Equipment Manufacturing) and MRO (Maintenance, Repair, and Operations).

Vacuum Seal Series: It includes O-rings, flat seals, custom seals, and metal seals. O-rings are available in a variety of elastomer materials, suitable for different temperature and chemical environments; flat seals are applicable to flange vacuum systems that require uniform pressure distribution; custom seals can be designed according to specific application requirements; metal seals, on the other hand, can be used in high-pressure and high-temperature application scenarios where traditional elastomer seals are insufficient in performance.

力士乐液压产品系列

力士乐的液压产品系列丰富多样，涵盖了多个品类，以下是一些主要的产品系列介绍：

油缸

重载型液压缸：适用于对负载能力要求较高的场合，能够承受较大的压力和重量，为设备的运行提供稳定的动力支持。

拉杆式液压缸：具有结构简单、安装方便等特点，广泛应用于各种线性运动的机械设备中。

自给式执行器：如 CytroMotion，将液压线性轴的效率提升到 6.2 千瓦这一新的高度，具备***功率密度、易操作性和高效率。

伺服液压执行器：可实现***的位置控制、速度控制和力控制，常用于对控制精度要求较高的自动化生产设备中。

泵

轴向柱塞泵：包括定量泵和变量泵，具有效***、压力高、流量稳定等优点，可广泛应用于各种液压系统中。

径向柱塞泵：能承受较高的压力，输出流量较大，适用于一些对流量和压力要求较高的重型机械设备。

叶片泵：具有结构紧凑、噪声低、运转平稳等特点，常用于中低压液压系统中。

外齿轮泵：结构简单、工作可靠、价格低廉，适用于一些对精度要求不高的液压系统。

马达

轴向柱塞马达：具有较高的效率和输出扭矩，可实现正反转，常用于需要高扭矩输出的机械设备中。

外齿轮马达：具有结构简单、工作可靠、成本低等优点，适用于一些对速度和扭矩要求不高的场合。

径向柱塞马达：输出扭矩大，可用于低速大扭矩的液压系统中。

液压阀

方向阀：用于控制液压油的流动方向，从而实现执行元件的启动、停止和换向等动作，如换向阀等。

压力阀：用于控制液压系统的压力，如溢流阀、减压阀等，可保护系统安全或满足不同工作部件对压力的要求。

流量控制阀：用于控制液压油的流量，从而调节执行元件的运动速度，如节流阀、调速阀等。

插装阀：具有结构紧凑、通流能力大、响应速度快等优点，可用于组成各种液压回路。

蓄能器

皮囊式蓄能器：利用皮囊内气体的压缩和膨胀来储存和释放能量，具有响应速度快、储存能量大等优点，常用于液压系统的缓冲、保压和能量回收等。

隔膜式蓄能器：采用隔膜作为隔离元件，具有密封性好、寿命长等特点，适用于一些对介质纯净度要求较高的场合。

Rexroth Hydraulic Product Series

Rexroth offers a diverse and comprehensive range of hydraulic products, covering multiple categories. Below is an introduction to some of its main product series:

Hydraulic Cylinders

Heavy-Duty Hydraulic Cylinders: Suitable for applications requiring high load-bearing capacity, they can withstand large pressures and weights, providing stable power support for the operation of equipment.

Tie-Rod Hydraulic Cylinders: Featuring a simple structure and easy installation, they are widely used in various mechanical equipment that requires linear motion.

Self-Contained Actuators: For example, the CytroMotion series raises the efficiency of hydraulic linear axes to a new level of 6.2 kW, boasting impressive power density, ease of operation, and high efficiency.

Servo Hydraulic Actuators: Capable of achieving precise position control, speed control, and force control, they are often used in automated production equipment that demands high control accuracy.

Pumps

Axial Piston Pumps: Including fixed-displacement and variable-displacement types, they offer advantages such as high efficiency, high pressure, and stable flow, making them widely applicable in various hydraulic systems.

Radial Piston Pumps: Able to withstand high pressure and deliver large output flow, they are suitable for heavy-duty mechanical equipment that has high requirements for flow and pressure.

Vane Pumps: Characterized by a compact structure, low noise, and smooth operation, they are commonly used in medium and low-pressure hydraulic systems.

External Gear Pumps: With a simple structure, reliable operation, and low cost, they are suitable for hydraulic systems that do not require high precision.

Motors

Axial Piston Motors: Possessing high efficiency and output torque, they can realize forward and reverse rotation, and are frequently used in mechanical equipment that needs high torque output.

External Gear Motors: Featuring a simple structure, reliable operation, and low cost, they are applicable to occasions with low requirements for speed and torque.

Radial Piston Motors: Delivering large output torque, they can be used in low-speed, high-torque hydraulic systems.

Hydraulic Valves

Directional Valves: Used to control the flow direction of hydraulic oil, thereby enabling the start, stop, and direction change of actuators (e.g., directional control valves).

Pressure Valves: Used to control the pressure of hydraulic systems (e.g., relief valves, pressure reducing valves), which can protect system safety or meet the pressure requirements of different working components.

Flow Control Valves: Used to control the flow of hydraulic oil, thereby adjusting the movement speed of actuators (e.g., throttle valves, speed control valves).

Cartridge Valves: Advantaged by a compact structure, large flow capacity, and fast response speed, they can be used to form various hydraulic circuits.

Accumulators

Bladder Accumulators: Utilizing the compression and expansion of gas inside the bladder to store and release energy, they have advantages such as fast response speed and large energy storage capacity. They are often used for buffering, pressure maintaining, and energy recovery in hydraulic systems.

Diaphragm Accumulators: Adopting a diaphragm as the ***lating element, they feature good sealing performance and long service life, making them suitable for occasions that have high requirements for medium purity.

YUKEN Hydraulic Product Series

YUKEN (Yuken Kogyo Co., Ltd.), a well-known Japanese hydraulic component manufacturer, is renowned for its high-precision, reliable, and cost-effective hydraulic products. Its product range covers core hydraulic components widely used in industrial machinery, construction equipment, and automation systems. Below is a detailed introduction to its main product series:

1. Hydraulic Pumps

As one of YUKEN’s flagship product lines, hydraulic pumps are designed for stable pressure output and efficient energy conversion, suitable for medium-to-high pressure hydraulic systems.

Axial Piston Pumps

The core models include the A10, A22, A37, A56, and A70 series, which are variable-displacement axial piston pumps with working pressures up to 31.5 MPa. They feature flexible displacement adjustment (via pressure compensation, flow compensation, or electric proportional control) and are widely used in injection molding machines, hydraulic presses, and heavy-duty construction machinery. The pumps adopt a compact design with low noise and high volumetric efficiency (up to 95%), ensuring long-term stable operation under heavy loads.

Vane Pumps

Representative series such as PV2R, V10, and V20 are double-vane or single-vane fixed-displacement pumps, suitable for medium-low pressure systems (working pressure: 16–21 MPa). They are characterized by smooth operation, low noise, and high reliability, making them ideal for plastic machinery, machine tools, and light industrial equipment. The PV2R series, in particular, supports multi-pump combinations (e.g., tandem pumps) to meet complex flow requirements of multi-circuit systems.

External Gear Pumps

The IPH series (e.g., IPH-2B, IPH-4B) is a high-pressure external gear pump with a maximum working pressure of 21 MPa. It has a simple structure, low cost, and strong anti-pollution ability, suitable for low-precision hydraulic systems such as agricultural machinery, small lifting equipment, and auxiliary circuits of industrial machines.

2. Hydraulic Valves

YUKEN’s hydraulic valves cover all functional categories of hydraulic control, with precise control performance and strong compatibility, supporting the construction of flexible hydraulic circuits.

Directional Control Valves

Solenoid-Operated Directional Valves: The DSG series (e.g., DSG-01, DSG-03) is a 4/3-way or 4/2-way solenoid valve with a maximum working pressure of 31.5 MPa. It adopts wet-type solenoids (with strong anti-overheating performance) and is available in AC/DC voltage options, widely used in automated production lines and machine tools for actuator commutation control.

Manual Directional Valves: The DMG series is a manual spool valve, suitable for occasions requiring manual operation (e.g., small hydraulic lifts, manual control auxiliary circuits) with reliable operation and low maintenance needs.

Pressure Control Valves

Relief Valves: The DB series (direct-acting) and DG series (pilot-operated) relief valves are used to limit the maximum pressure of hydraulic systems, preventing overload. The DG series supports remote pressure adjustment and has high pressure stability, suitable for high-pressure systems such as hydraulic presses.

Pressure Reducing Valves: The DR series (e.g., DR-01) is a pilot-operated pressure reducing valve that provides stable low-pressure oil for auxiliary circuits (e.g., control circuits, lubrication circuits), with adjustable outlet pressure and low pressure fluctuation.

Flow Control Valves

Throttle Valves: The FG series (e.g., FG-01) adjusts flow by changing the throttle opening, suitable for simple speed control scenarios.

Speed Control Valves: The FCG series combines a throttle valve and a one-way valve, realizing one-way speed adjustment and reverse free flow, commonly used in the speed control of cylinders and motors (e.g., feeding mechanisms of machine tools).

Proportional Control Valves

The EFBG series (proportional directional flow valves) and EDG series (proportional pressure valves) integrate electronic proportional control technology, enabling stepless adjustment of flow or pressure via analog signals (0–10V/4–20mA). They are suitable for high-precision control scenarios such as injection molding machine mold opening/closing, robotic arms, and precision presses.

3. Hydraulic Cylinders

YUKEN’s hydraulic cylinders focus on structural reliability and installation flexibility, meeting the linear motion needs of different equipment.

Tie-Rod Hydraulic Cylinders

The HC series (e.g., HC2, HC4) is a standard tie-rod cylinder with a maximum working pressure of 21–31.5 MPa. It adopts a modular design (with optional rod end connections, cylinder ends, and seals) and is suitable for general industrial scenarios such as machine tool clamping mechanisms, material handling equipment, and press sliders.

Welded Hydraulic Cylinders

The HW series features a welded cylinder barrel (compact structure, high rigidity) and is designed for heavy-duty applications (e.g., construction machinery, mining equipment) with a maximum working pressure of up to 35 MPa. It supports custom stroke lengths and special rod surface treatments (e.g., hard chrome plating) to improve wear resistance.

Compact Hydraulic Cylinders

The HCS series has a small installation space and is suitable for equipment with limited space (e.g., small automated machinery, auxiliary clamping devices). It has a working pressure of 16–21 MPa and adopts a built-in buffer structure to reduce impact during movement.

4. Hydraulic Motors

YUKEN’s hydraulic motors are mainly used for low-speed, high-torque or high-speed, low-torque power output, with strong adaptability to harsh working conditions.

External Gear Motors

The GM series (e.g., GM-05, GM-10) is a fixed-displacement external gear motor with a maximum working pressure of 21 MPa. It has a simple structure, high torque density, and is suitable for low-speed, high-torque scenarios such as conveyor belt drives, winches, and rotating mechanisms of agricultural machinery.

Vane Motors

The VM series has smooth operation, low noise, and a wide speed range, suitable for medium-speed applications (e.g., small rotary tables, fan drives of industrial equipment) with good speed stability.

5. Hydraulic Power Units (HPUs)

YUKEN provides integrated hydraulic power units (customizable according to customer needs) that combine pumps, motors, valves, oil tanks, and filters into a single module. The HPU series supports power ratings from 0.75 kW to 75 kW and working pressures up to 31.5 MPa. It is pre-installed and debugged at the factory, reducing on-site installation time and is widely used in small hydraulic systems (e.g., automated door openers, small presses, and testing equipment).

YUKEN’s hydraulic products are characterized by high cost performance, strong environmental adaptability (supporting -10°C to 60°C working temperatures), and good interchangeability (compatible with international standards such as *** and DIN). They are widely used in industries such as machinery manufacturing, automotive, construction, agriculture, and aerospace.

油研（YUKEN，油研工业株式会社）是日本知名的液压元件制造商，以高精度、高可靠性和高性价比的液压产品***。其产品范围涵盖广泛应用于工业机械、建筑设备和自动化系统的核心液压元件。以下是其主要产品系列的详细介绍：

液压泵

作为油研的旗舰产品线之一，液压泵专为稳定的压力输出和高效的能量转换而设计，适用于中高压液压系统。

轴向柱塞泵

核心型号包括 A10、A22、A37、A56 和 A70 系列，均为变量排量轴向柱塞泵，工作压力可达 31.5MPa。它们具有灵活的排量调节功能（通过压力补偿、流量补偿或电比例控制实现），广泛应用于注塑机、液压机和重型工程机械。该类泵采用紧凑型设计，噪音低且容积效***（可达 95%），确保在重负荷下长期稳定运行。

叶片泵

代表性系列如 PV2R、V10 和 V20 系列，为双叶片或单叶片定排量泵，适用于中低压系统（工作压力 16–21MPa）。其特点是运行平稳、噪音低且可靠性高，是塑料机械、机床和轻工设备的理想选择。特别是 PV2R 系列，支持多泵组合（如双联泵），以满足多回路系统的复杂流量需求。

外啮合齿轮泵

IPH 系列（如 IPH-2B、IPH-4B）是高压外啮合齿轮泵，工作压力为 21MPa。其结构简单、成本低且抗污染能力强，适用于农业机械、小型起重设备和工业机械辅助回路等低精度液压系统。

液压阀

油研的液压阀涵盖液压控制的所有功能类别，具有***的控制性能和强大的兼容性，支持构建灵活的液压回路。

方向控制阀

电磁换向阀：DSG 系列（如 DSG-01、DSG-03）为 4/3 通或 4/2 通电磁阀，工作压力 31.5MPa。采用湿式电磁铁（抗过热性能强），提供交直流电压选项，广泛应用于自动化生产线和机床，用于执行器的换向控制。

手动换向阀：DMG 系列是手动滑阀，适用于需要手动操作的场合（如小型液压升降机、手动控制辅助回路），运行可靠且维护需求低。

压力控制阀

溢流阀：DB 系列（直动式）和 DG 系列（先导式）溢流阀用于限制液压系统的压力，防止过载。DG 系列支持远程压力调节，压力稳定性高，适用于液压机等高压力系统。

减压阀：DR 系列（如 DR-01）是先导式减压阀，为辅助回路（如控制回路、润滑回路）提供稳定的低压油，出口压力可调且压力波动小。

流量控制阀

节流阀：FG 系列（如 FG-01）通过改变节流口开度调节流量，适用于简单的速度控制场景。

调速阀：FCG 系列结合了节流阀和单向阀，实现单向速度调节和反向自由流动，常用于油缸和马达的速度控制（如机床的进给机构）。

比例控制阀

EFBG 系列（比例方向流量阀）和 EDG 系列（比例压力阀）集成了电子比例控制技术，可通过模拟信号（0–10V/4–20mA）实现流量或压力的无级调节。适用于注塑机开合模、机械臂、精密压力机等高精度控制场景。

液压缸

油研的液压缸注重结构可靠性和安装灵活性，满足不同设备的直线运动需求。

拉杆式液压缸

HC 系列（如 HC2、HC4）是标准拉杆式油缸，工作压力 21–31.5MPa。采用模块化设计（可选杆端连接、缸端和密封件），适用于机床夹紧机构、物料搬运设备和压力机滑块等一般工业场景。

焊接式液压缸

HW 系列采用焊接缸筒（结构紧凑、刚性高），专为重型应用设计（如工程机械、矿山设备），工作压力可达 35MPa。支持定制行程长度和特殊的活塞杆表面处理（如硬铬镀层），以提高耐磨性。

紧凑型液压缸

HCS 系列安装空间小，适用于空间有限的设备（如小型自动化机械、辅助夹紧装置）。工作压力 16–21MPa，采用内置缓冲结构，减少运动过程中的冲击。

液压马达

油研的液压马达主要用于低速大扭矩或高速小扭矩动力输出，对恶劣工况的适应性强。

外啮合齿轮马达

GM 系列（如 GM-05、GM-10）是定排量外啮合齿轮马达，工作压力 21MPa。结构简单、扭矩密度高，适用于低速大扭矩场景，如传送带驱动、绞车和农业机械的旋转机构。

叶片马达

VM 系列运行平稳、噪音低且转速范围广，适用于中速应用（如小型回转工作台、工业设备的风扇驱动），速度稳定性好。

液压动力单元（HPUs）

油研提供集成式液压动力单元（可根据客户需求定制），将泵、电机、阀、油箱和过滤器组合成一个模块。HPU 系列支持功率从 0.75kW 到 75kW，工作压力可达 31.5MPa。在工厂预装调试，减少现场安装时间，广泛应用于小型液压系统（如自动开门器、小型压力机和测试设备）。

油研的液压产品具有高性价比、强环境适应性（支持 - 10°C 至 60°C 工作温度）和良好的互换性（兼容 ***、DIN 等***）等特点，广泛应用于机械制造、汽车、建筑、农业和航空航天等行业。