HomeSupplier Discoveryarrow-rightTools & Hardwarearrow-rightHydraulic Cylinderarrow-rightRegulated Type Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
More
Province & Region
More
about regulated type
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

regulated type2,000+ factories verified

Xiamen Songli Battery Co., LTD

4.0
·Manufacturer/Factory
Main Products:
Lead Acid Battery, Plate
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Company Profile:
MHB POWER was founded in year 1992 and located in Anxi Economic Development Area of Quanzhou city, Fujian province. It covers more than 200, 000 square meters with more than 1500 staff and annual capacity more than 6 million KVAh. As a leading manufacturer in the field of the lead acid VRLA battery and battery plates, MHB POWER is high tech enterprise focusing on the new energy battery products researches, development, production and marketing. The products range covers battery plates, starter battery both on motorcycle and fuel car, industry battery, power storage battery, motive battery, etc. The products are widely used for transportation, power storage fields, UPS, solar system, emergency lightening system and other renewable energy storage fields. MHB POWER is one of the main drafting units of the industry's national standards. It has served as the vice chairman of the China Battery Industry Association and has won honors such as "Top 10 Enterprises in China's Light Industry Battery Industry", "Well-known Chinese Trademark", and "Fujian High-tech Enterprise". In the lead-acid battery industry in Fujian Province, MHB POWER has always maintained the top position in revenue and tax revenue. The company was awarded the title of "Major Taxpayer" of private enterprises in Quanzhou from 2016 to 2020. Achieved a tax payment exceeding 70 million yuan in 2024 and has been consistently listed in the Top 100 Private Enterprises and Top 100 Taxpayers rankings in Quanzhou City for several consecutive years. MHB POWER has passed the quality, environment, occupational health and safety management system certifications, and its products have passed the Golden Sun certification, EU CE certification, and US UL certification. It has been rated as the "AAA-level credit enterprise" and "Fujian Province advanced enterprise in quality management" in the industry. The technical transformation project of MHB POWER was rated as a "key demonstration project for clean production" by the Ministry of Industry and Information Technology of the People's Republic of China, and was the first to pass the standard conditions verification of the lead-acid battery industry organized by the Ministry of Industry and Information Technology of the People's Republic of China, and passed the environmental protection verification organized by the Fujian Provincial Environmental Protection Department. In 2017, it was rated as the first batch of "green factories" by the Ministry of Industry and Information Technology of the People's Republic of China. In addition, the company has built municipal and provincial engineering and technology centers, and cooperated with many universities to establish the MHB Research Institute to carry out cutting-edge battery technology research. MHB POWER has always adhered to the business and development philosophy of "integrity, responsibility, innovation, excellence, and win-win", and has continued to forge ahead in the battery industry, pursuing excellence in growth and developing steadily in win-win situations. We will firmly grasp the development opportunities of the new era and create new glory for the company!

Jiangsu Hengcai Hydraulic Mechanical Co., Ltd.

25 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Cylinder
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Company Profile:
Jiangsu Hengcai Hydraulic Mechanical Co., Ltd. Was established in 1988 and is located in Jianhu County, Yancheng City, Jiangsu Province, China. We are a professional manufacturer dedicated to the research, development, production, sales and service of hydraulic cylinders, owning more than 30 years of profound industry experience. Our company covers a plant area of 8478 square meters with 106 dedicated employees, including a professional R&D and technical team. With a registered capital of 3 million US dollars, our annual production capacity reaches over 60, 000 units. We have obtained ISO9001 quality management system certification, CE certification and a large number of national patents including 24 invention patents and 90 utility model patents, and our quality management system has passed the verification of TÜV Rheinland. We implement strict inspection on raw materials, full-process monitoring during production and comprehensive testing for finished products to guarantee stable and superior product quality. We mainly design and produce all types of standard and non-standard hydraulic cylinders, which are widely applied in construction machinery, sanitation equipment, marine machinery, coal mine equipment, logistics handling equipment, metallurgy, petroleum, chemical industry, agricultural machinery and other fields. Our products have been supplied to more than 40 large and medium-sized main engine manufacturers at home and abroad, and exported to many countries and regions across the globe. We provide professional OEM and ODM customized services according to customers' drawings and actual working condition demands. Supported by sophisticated production equipment, mature manufacturing technology and strict quality control, our hydraulic cylinders feature stable performance, high durability and cost competitiveness, winning wide recognition and trust from global clients. Adhering to the business philosophy of pursuing excellence in technology and focusing on customer demands, we keep investing in technological innovation and product upgrading, continuously expand our product range and market layout. Looking ahead, we will keep optimizing product quality and service system, strive to enhance our comprehensive strength and global influence, and commit ourselves to becoming a leading and trustworthy hydraulic cylinder supplier worldwide, and create greater value for all partners with reliable products and sincere service.

Changzhou LiAn Hydraulic Equipment Co., Ltd.

22 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Cylinder, Hydraulic Cylinder, Hydraulic Hoist, Large Cylinder, Machining Components
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Changzhou Lian Hydraulic Equipment Co., Ltd was formed in Changzhou of China with the mission of supplying the world class hydraulic cylinders and hydraulic systems to the various industrial sectors.

Shandong Kewill Automation Equipment Co., Ltd.

8 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic cylinders, pneumatic cylinder, hydraulic power unit
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Kewill Automation Equipment Co., Ltd, established in 2019, located in the beautiful water spring city of Jinan. A professional manufacturer of hydraulic and pneumatic solutions integrating R&D, production, sales, technical support and service. It is committed to design and making different types high-quality cylinders: Cover high pressure pneumatic cylinders, pneumatic boosters, large pneumatic cylinders, hydraulic cylinders, high pressure hydraulic cylinders, tie rod hydraulic cylinders, rack and pinion swing hydraulic cylinders, square block compact hydraulic cylinders, hydraulic power units, Pneumatic&Hydraulic control solutions. Widely used in manufacturing Plant, construction works, Energy & Mining, Steel plant, metallurgy machinery, marine engineering, engineering machinery, intelligent machinery production lines, agricultural machinery, environmental protection machinery, paper making machinery, lifting and transportation machinery, electric power and other industries.

Guoyue Hydraulic Equipment Manufacturing (Jiangsu) Co., Ltd.

5 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Cylinder
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Guoyue Hydraulic Equipment Manufacturing (Jiangsu) Co., Ltd., is a high-technology enterprise that integrates research, design, development, production, operation, and service, specializing in the production of hydraulic cylinders, including single acting cylinders, double acting Cylinders, nested cylinders, rotating cylinder, low height cylinders, high tonnage cylinders, tie-rod cylinders and more.

Guangzhou Hongzhouyi Technology Co., Ltd.

5.0
Main Products:
Solar Panel, Solar Module, Bluetooth Speaker, Power Supply, Power Adapter, Power Cord, Solar Street Light, Dressing, Solar Power Bank, PV Module
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Guangzhou Hongzhouyi Technology Co., Ltd was established in 2022, specializing in the supply of Flexible Solar Panels, Bendable Solar Module, Bending PV Module, Curved Solar Powered Panel for Electric Golf Cars, Patrol Cars, Tourism cars, Yachts, Roof Power Generation Systems, Backpacks, Tents and Various Curved Surfaces. Foldable Solar Charger Bag Panel is mainly for the Camping, Hiking, Climbing, or any outdoor activities. Abnormal Shape and Size of SMT Lamination mini Small Panels for Solar Yard Light, Solar Power Bank, Solar Toy Car, Solar LED Light, Solar Electronic Scales, Solar Energy Monitoring, Solar Garden Light, Solar GPS Lock, Solar TPMS, Mobile Charger, Lawn Lamp, Portable Lantern, Street Lamp, Traffic Lights, Christmas Lights, Walkman, Toys etc.

Top Valves Manufacture(Nantong) Co., Ltd.

21 yrs·4.0
·Manufacturer/Factory & Trading Company
Main Products:
Valves
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
TOP VALVES MANUFACTURE (NANTONG) Co., Ltd. Was established in April 2006 with a registered capital of 60 million yuan. The headquarters is located in Binhai Industrial Zone, Qidong City, Jiangsu Province, with about 100 employees. It specializes in the development and production of various industrial valves. The company is a national high-tech enterprise, a member of the China General Valve Association, a member of the China Construction Association for Water Supply and Drainage, and a qualified supplier to China National Nuclear Corporation, Datang Power, National Energy, Minmetals, China State Construction, China Fuel Group, and China Coal Group. It is also a drafting unit for multiple national and industry valve standards, such as flexible sealing gate valves, household pressure reducing valves, and cryogenic valves. The company has successfully obtained ISO9001 (AFNOR Certification, France), OHSAS18001 occupational health and safety certification, ISO14001 environmental management certification, TSG (China Special Equipment Manufacturing License A1), API 6D/607 certification, CE (EU) certification, 3A corporate credit certification, among others.

SHENZHEN SCIEO ELECTRONICS CO., LTD.

10 yrs
·Trading Company
Main Products:
Power Supply, Oscilloscope, Electronic Load, Multimeter, Signal Generators, Safety Regulation Tester, Hipot Tester, ESD Simulator, Thermal Imager, Power Meter
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Our company is Shenzhen Scieo Electronics Co., Ltd. (Headquartered in Shenzhen, China)

Wenzhou Forever Classic Technology Co., Ltd.

5.0
Main Products:
Electric Valves, Pneumatic Valves, Pneumatic(Electric)  Ball Valve, Pneumatic(Electric)  Butterfly Valve, Control Valve, Hydraulic Actuator, Other Automatic Valves  etc
Country/Region:
Zhejiang, China
Sample Service:
Sample Available
Company Profile:
Wenzhou Forever Classic(Fosic) Technology Co., Ltd. is professional in research, developing, producing and sales of all sots of pneumatic(Electric) actuator, pneumatic(Electric) ball valve, pneumatic(Electric) butterfly valve, control valve, hydraulic actuator, hydraulic ball valve, hydraulic butterfly valve and other automatic valves etc,

Zhitai Technology Group Co., Ltd.

Main Products:
Pneumatic Actuator, Control Valve, Ball Valve, Butterfly Valve, Globe Valve, Check Valve, Gate Valve, Pneumatic Valve
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Zhitai Technology Group Co., Ltd is founded in March, 2003 and is located at 150 Hongrui Road, Shacheng Street, Longwan district, , Wenzhou city, which is called "China Valve Town". It has registered fund of RMB105 million. It is high-tech enterprise in Zhejiang province, innovative enterprise in Wenzhou city, member of China Valve Association, vice president company of Wenzhou Pump-valve Association, council member of China Valve Town. It has ISO9001, CE, ATEX, PED, SIL2 and other certificates.

Nancome Electric Technology Co., Ltd.

19 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Switchgear, Electrical Switchgear, Distribution Cabinet, Control Cabinet
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Nancome Electrical Technology Co., Ltd, was founded in 1992. With deep roots in the electrical industry, the company possesses advanced technology and extensive experience. It is a national high-tech enterprise that integrates product research and development, manufacturing, and sales. The company has independent technical research and development centers, production facilities, and office support in various locations such as Putian, Wenzhou, and Guangzhou. It has invested in production bases and established productive partnerships. Over the course of 30 years of development, the product range has expanded to encompass complete sets of high and low voltage switchgear, communication electrical equipment, smart power distribution equipment, intelligent charging station equipment, compact bus ducts, security and intelligent control equipment, smart switches and sockets, as well as lighting solutions.

Suzhou Lingfran Electric Co., Ltd

5.0
Main Products:
Voltage Stabilizer/Regulator, Transformer, Static Frequency Converter, Uninterruptible Power Supply, DC Power Supply, Variac, Ground Power Unit, Shore Power Converter
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Suzhou Lingfran Electric Co., Ltd is a integrated enterprise with R & D, manufacture, sales and service of automatic voltage stabilizers / regulators, dynamic voltage restorers, variacs, transformers, reactors, static frequency converters, gound power units, shore power converters, DC power supplies, uninterrupted power supplies, UPS maintenance bypass cabinets, static var generators, active harmonic filters and medical isolated power supplies, etc.

Huizheng Auto Control Valve Group Co., Ltd.

18 yrs
·Group Corporation
Main Products:
Ball Valve, Floating Ball Valve, Trunnion Ball Valve, Control Valve, Globe Control Valve, Pneumatic Diaphragm Actuator, Adjusting Valve, Regulated Valve, Electric Actuator
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Zhejiang Huizheng Auto Control Valve Group Co., Ltd. Has become a professional manufacturer focusing on researching, developing and solving the auto control valve, a crucial component of the industrial automatic system after more than two decade years of experience in the market.

Shenzhen Everexceed Industrial Co., Ltd.

17 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
LiFePO4 Batteries, Industrial Chargers, Modular DC Charger, Solar Energy Systems, Telecom Power Systems, Lead Acid Battery
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
EverExceed is a global leading provider of energy storage system with 20+ years' battery manufacturing experience; We can offer Safer, Smarter, Simpler battery energy storage system (lithium battery/lead acid battery) and solar systems. We have self-owned factory with advanced production lines to manufacture batteries and assemble all in one energy storage systems for residential and commercial energy storage solutions.

Shenzhen Sunstone Power Technology Co., Ltd

Main Products:
Solar Battery, Lithium Battery, Lithium Ion Battery, LiFePO4 Battery, Battery, Storage Battery, Gel Battery, Lead Acid Battery, UPS Battery, Rechargeable Battery
Country/Region:
Guangdong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Sunstone Power Industry Co., Ltd. is a company with 20 years of experience in the production and sales for energy products. Established in 2003, the company has grown into an enterprise group that consists of two factories in China: A lead-acid battery production factory in Yichun City, Jiangxi P. R, and a lithium battery production factory in DongGuan City, Guangdong P. R.; Two overseas companies are also established: Sunstone Power Industrial GmbH in Germany, and PT. Solid Power Energi in Indonesia.

Wuxi Bitebi Machinery Technology Co, Ltd

13 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Pneumatic Cylinder and Cylinder Kits
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Wuxi Bitebi Machinery Technology Co., Ltd. Was established in April 2014. We are one of the leading manufacturer as well as supplier of pneumatic cylinder in China. Our main products are: Pneumatic cylinder, actuator, solenoid Valve, air treatment units, pneumatic fittings and air hose. We have been committed to developing and producing pneumatic cylinders and pneumatic machinery components in industrial automation field to provide more efficient and accurate cylinder devices.

Shandong Linmai Hydraulic Equipment Co., Ltd

6 yrs
·Manufacturer/Factory
Main Products:
Hydraulic Cylinder, Hydraulic System, Power Unit, Hydraulic Accessories, Hydraulic Oil Cylinder, Hydraulic Power Pack, Hydraulic Power Station
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Linmai Hydraulic Equipment Co., Ltd., established on August 28, 2020, is a professional manufacturer specializing in hydraulic cylinders, hydraulic systems, and hydraulic components. Headquartered in Linyi, renowned as "The Logistics Capital of China, " the company is committed to providing comprehensive hydraulic solutions.

Fujian Quanzhou Elephant Machinery Co., Ltd

12 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic cylinders
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
    Fujian Quanzhou Elephant Machinery Co., Ltd. Was founded in 2015 and is located in Quanzhou, Fujian province, famous as the starting point of the "Maritime Silk Road". We have been dedicated to the R&D and manufacturing of hydraulic cylinders for over 15 years. Today, we are a professional supplier integrating production and international trade, supported by a specialized sales team and online after-sales service to ensure a seamless customer experience.

FLUTEC HYDRAULICS (CHANGZHOU) CO., LTD.

Main Products:
Hydraulic Cylinder, Honed Tube, Chromed Rod, Cylinder Parts
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
FLUTEC Hydraulics was formed in Changzhou with the mission of supplying the world class hydraulic cylinders and hydraulic systems to the various industrial sectors.

Jiangsu Hydtech Heavy Industry Co., Ltd.

9 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Large Hydraulic Cylinder, Large Weldment, Large-tension Tie Rod & Column & Nut, Large Roller & Shaft Components
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.

Shandong Source Machinery Co., Ltd.

Main Products:
Hydraulic Cylinder, Water Well Drilling Rig, Drive Shaf, Core Drill Rig, Oil Press, Peanut Harvester, Peanut Planter, Tractor-Mounted Ridger, Lift Cylinder, Agricultural Machinery Hydraulic Cylinder
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shandong Yuanquan Machinery Co., Ltd. is a machinery manufacturing enterprise located in Shandong Province, China. The company specializes in the research, development, production, and sales of various mechanical equipment, widely used in industries such as construction, mining, metallurgy, chemicals, and power.

Wuxi Boli Hydraulic Pneumatic Technology Co., Ltd.

13 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Cylinder, Pneumatic Cylinder, Piston Road, Cylinder Tube, Hydraulic Jack, Spherical Plain Bearings
Country/Region:
Jiangsu, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Wuxi Boli Hydraulic is known as a 20 years‘ Professional manufacturer of hydraulic cylinders, hydraulic jack, cardan shaft and spare parts in Wuxi, China around 170km from Shanghai Port. Our factory cover an area of over 5000 square meters and have around 100 stuff including a technical team with more than 20 engineers. Our workshop equipped with over 30 sets of manufacturing and testing machines including machining center, numerical control machine, argon welding machine, plasma cutter etc. Boli has gained the certification of ISO ISO9001: 2008 and Product quality supervision and inspection center of Wuxi City. Meanwhile, Boli also got customers' satisfaction for reasonable price, timely delivery and good after-sale service.

Shenzhen Xingzhongke Power Technology Co., Ltd.

Main Products:
AC-DC Power Supplies, DC-DC Power Supplies, Battery Chargers, Switching Power Supply Module
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shenzhen Xingzhongke Power Technology Co., Ltd., founded in 2010, is a national high-tech enterprise specializing in high-performance power solutions, with strong technical strength and independent R&D capabilities. The company has obtained multiple Invention Patents and Utility Model Patents issued by the State Intellectual Property Office, which fully demonstrates our strong technological innovation strength and independent R&D capabilities. Certified with ISO9001 quality management system, we focus on the R&D, production and sales of Xingzhongke brand medium & high-power adjustable switching power supplies, programmable DC power supplies, switching power supply modules and intelligent battery chargers, adhering to the core concept of "technology-driven innovation".

Jiangyin Eternal Heavy Industry Co., Ltd.

Main Products:
Hydraulic Cylinders, Roll Forgings, Shaft Forgings, Sleeve Forgings, Raise Boring Tools
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Jiangyin Eternal Heavy Industry Co. Ltd was established in 2008, it is National high-tech enterprise, innovative small and medium-sized enterprise. Till now our main products including all kinds of special steel forgings and heavy duty hydraulic cylinder.

WUXI ST.HANS PNEUMATIC VALVE ACTUATORS MAKER CO., LTD.

26 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Pneumatic Actuator, Limit Switch, Pneumatic Accessories
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
In the early 1990's coming with the trend of global manufacturing transferring to China, Wuxi ST. HANS was established, then ST. HANS'S first actuator was born.

Gulfstream Hydraulic (Guangzhou) Technologies Co., Ltd.

7 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Cylinder, hydraulic power unit, Hydraulic Valve, Hydraulic Pump, Hydraulic Fittings
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Gulfstream Oil Pressure (Guangzhou) Technology Co, Ltd is specialized in the development and production of oil andgas pressure, ar and oll pressure conversion and other related products. The AViG0 brand series products include: Hydraulicsystem, oil pressure cylinder, die test bench, fixture, gasliquid pressurized cylinder, Products have a high degree of customization, according to customer needs, can design customers exclusive oil, air pressure products, after many years of markettesting, the products are trusted by customers.

Yangzhou Idealtek Electronics Co., Ltd.

Main Products:
DC Power Supply, AC Power Supply, Switching DC Power Supply, High Voltage Power Supply, Linear DC Power Supply, Electroplating DC Power Supply, High Voltage Capacitor Charging Power Supply, Intermediate Frequency AC Power Supply, Motor Test Power Supply, Instrumentation
Country/Region:
Jiangsu, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
IDealTek Electronics Co., Ltd. is committed to being an ideal provider of power solutions, including DC power supply (Switching mode & Linear mode), AC power supply, High voltage power supply and capacitor ripple current test power supplies, benefiting from years of experience in designing and manufacturing power supplies, we can also undertake the needs of custom power projects.

Eaa Electric Co., Ltd.

8 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Transducer, Valve Positioner
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Wenzhou EAA Electric -China professional manufacturer, OEM factory and solution supplier of electro pneumatic transducer, electro pneumatic converter, electro pneumatic positioner, valve positioner etc.