HomeSupplier Discoveryarrow-rightElectrical & Electronicsarrow-rightCable Conduitarrow-rightCable Protect Pipe Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
More
Province & Region
More
about cable protect pipe
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

cable protect pipe1,000+ factories verified

Shandong Hengde Plastic Co., Ltd

10 yrs
·Manufacturer/Factory & Trading Company
Main Products:
HDPE Pipe, PE Pipe, HDPE Water Supply Pipe, Mpp Power Pipe, HDPE Electric Power Pipe, HDPE Double Wall Corrugated Pipe, HDPE Communication Pipe, HDPE Bundle Pipe, HDPE Silicon Core Pipe, HDPE Micro Duct
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
  Shandong Hengde Plastic Co., Ltd. is a pipe manufacturing enterprise that integrates design, production, and sales. The company has more than 10 sets of large and medium-sized mechanical processing equipment for producing various types of pipes, with an annual production capacity of up to 3 million meters. Simultaneously possessing the necessary process equipment and testing instruments for physical and chemical testing, pressure testing, etc; The main products produced include HDPE water supply and drainage pipes, gas pipes, silicon core pipes, bundled pipes, ground source heat pump pipes, MPP power pipes, etc. The company relies on a rigorous quality management system to ensure quality throughout the entire process of product production, transportation, and service. Passed quality management system certification, environmental management system certification, occupational health and safety management system certification, Shandong Province's domestic hygiene license and product certification for drinking water hygiene and safety products, People's Republic of China's special equipment manufacturing license - natural gas pipeline (pressure pipeline components), transportation engineering product - HDPE silicon core pipe factory inspection certificate. The company has a professional technical research and development team. In recent years, it has been recognized as a national high-tech enterprise, a "specialized, refined, unique, and new" enterprise in Shandong Province, a technology-based small and medium-sized enterprise in Shandong Province, an innovative small and medium-sized enterprise in Shandong Province, and a "specialized, refined, unique, and new" enterprise in Liaocheng City. It has accumulated multiple utility model patents. The company continues to strengthen its investment in technology research and innovation, further promoting technological innovation and product upgrades, and enhancing the company's core competitiveness. The company upholds the corporate spirit of "unity, struggle, pragmatism, and innovation", promoting efficiency through management, survival through quality, development through reputation, building a brand through integrity, and increasing vitality through sales. Introduce market mechanisms into various aspects of enterprise sales, supply, production, etc., and establish an outward oriented development and operation mechanism that adapts to the market economy. By creating famous brands, producing high-quality products, providing high-quality services, and maintaining credibility, we aim to shape a positive social image. To build a product monument for Chinese pipes and always move forward, striving to create a national brand in the Chinese plastic pipe industry!

Shandong Guangdu Pipe Co., Ltd.

Main Products:
PVC Pipe, PVC Fitting, HDPE Pipe, HDPE Fitting, PPR Pipe, PPR Fitting, HDPE Double Wall Corrugated Pipe, Mpp Pipe, HDPE Steel Belt Reinforced Pipe, Conduit Pipe
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Guangdu Pipe Co., Ltd is professional manufacturer of plastic pipes and fittings with more than 15 years exporting experience. Our company has 30 production lines and covers an area of 20, 000 square meters. Our company's main products are: HDPE pipe and fittings for water supply, gas, drainage and irrigation. PVC pipe and fittings for water supply, irrigation and drainage, PPR cold and hot water pipe and fittings, MPP electrical protection pipe, HDPE double wall corrugated pipe, HDPE steel belt reinforced corrugated pipe, etc. There are nearly 3, 000 kinds of pipes and fittings and valve products of different varieties and specifications. Our products are exported to South Arica, Middle East, Southeast Asia, South Asia, Central Asia, Russia, South America, North Africa, Middle Africa and other counties and regions.

Hebei Xiong'an Anzheng Engineering Materials Technology Co., Ltd.

Main Products:
HDPE Pipe, PVC Pipe, PPR Pipe, Mpp Pipe, HDPE Fittings, PVC Fittings, Plastic Tubing, Plastic Pipe, Water Supply Pipe, Drain Pipe
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hebei Xiong'an East Boom Engineering Materials Trade Co., Ltd. is the core international trade subsidiary of Hebei Xiong'an Anzheng Engineering Materials Technology Co., Ltd., with a registered capital of 60 million RMB. With 23 years of experience in the pipeline industry, we are committed to becoming a high-tech group integrating research and development, production, and sales. Leveraging the strategic advantages of the Xiong'an New Area, we have integrated the complete industrial chain from raw material procurement to finished product delivery, with products exported to international markets such as Southeast Asia, the Middle East, and South America.

Shandong Donghong Pipe Industry Co., Ltd.

19 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Steel wire reinforced PE composite pipe, HDPE pipe, PE pipe, steel pipe
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Donghong Pipe Industry Co., Ltd. ( Donghong Pipe Industry, stock code: 603856) is headquartered in the hometown of Confucius - Qufu, China, and is an engineering pipeline manufacturer, pipeline engineering service provider and general contractor of pipeline engineering for all kinds of high polymer plastic pipelines, modified plastic composite pipes, heavy Donghong is a manufacturer of engineering pipelines, pipeline engineering service provider and general contractor of pipeline engineering with various types of high polymer plastic pipes, modified plastic composite pipes, heavy anti-corrosion metal pipes, energy-saving thermal insulated pipelines, connecting fittings and the application of new materials as its main business. Relying on the national enterprise technology center, the company integrates upstream and downstream ecological resources, deepens the research on digitalization, informatization and intelligentization of pipeline engineering, integrates intelligent pipeline into human life, and devotes itself to becoming a global leading comprehensive solution provider of pipeline system.

Cangzhou Bao Lai Da Import & Export Trading Co., Ltd.

Main Products:
Concrete Pump Pipe and Spare Parts, Carbon Steel Pipefittings Flange Elbow Tee, Stainless Steel Pipefittings Plug Coupling Nut, HDPE Pipe and Pipefittings, Valve Well Cover Cap, CPVC Pipe PVC Pipe Mpp Pipe, Aluminium Pipefittings Elbow Flange Reducer Tee, Chemical Raw Materials, Door, Protect Fence Guardrail
Country/Region:
Hebei, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Cang Zhou Bao Lai Da Pipefittings manufacturing., Ltd, a professional pipefittngs manufacturer with 25 years producing experience, main exporting products included Staineless pipe and pipefittings, carbon steel pipefittings, Valve, HDPE Pipe and fittings, PVC pipe and pipefittings, and PPR Pipefittings, the company established in 2001, since it established, we won the good reputation whatever product quality or service, Which can help user to save the materials cost and maximize your output, And its competitive price to our clients whatever you are new or old clients, we are trying to do the best service for you.

Guangdong Ctube Industry Co., Ltd.

Main Products:
PVC Conduit, PVC Conduit Fittings, Rigid Conduit, Flexible Conduit, LSZH Conduit, Junction Box, Adapatable Box, Electrical Flexible Hose, Solar Conduit, Electrical Conduit
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
We are one of the most professional plastic conduit manufacturers and research and development companies in China. We specialize in the development and production for innovative plastic conduit and fitting products for the cable management and protection.

Boyee Industry & Trading Co., Limited

Main Products:
Pull out Basket, Kitchen Cabinet Organization, Storage Basket, Dish Rack, PVC Trunking, PVC Conduit, PVC Corrugated Conduit, PVC Fittings
Country/Region:
Guangdong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Global Manufacturer Committed to Storage Hardware Durable Quality, Worldwide Reach

HEBEI RITAI ORIGINAL PIPE CO., LTD.

26 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Pex Pipe, PE-Rt Pipe, Flexible Hose &Tubing, Pex-Al-Pex Pipe Fittings, PPSU Fittings, Brass Fittings, PPR Pipe, PE Pipe, PVC Pipe, Manifolds
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hebei Ritai Original Pipe Co., Ltd. Was founded in 2001, with its pipe production base located in Hebei, China. Currently, it is one of the top three largest PE-Xa pipe manufacturers in China, owning 100 PEXa production lines and 5 PE-Xa oxygen barrier external coating lines. The annual production capacity of PE-Xa pipe is 40 million meters.

Haining Zhengli Rubber & Plastic Factory

5.0
·Manufacturer/Factory & Trading Company
Main Products:
Sealing Ring, Rubber Gasket, Rubber Damper, Rubber Bushing, Rubber Diaphragm, Rubber Grommet, Rubber Tube, Rubber Plug, Rubber Sheet, Silicone Mat
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
With three machine and 100 square meter of space, Haining ZhengLi Rubber & Plastic Factory started its custom rubber part manufacturing business on January 1st, 1993. Founder Yuezhong Wang and his family built the company from the ground up on a foundation of commitment, hard work, quality service & products, and family values which are "To Be Honest, To Do Best".

LONWOW INDUSTRY CO., LTD.

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Electrical Metal Conduits, Stainless Steel Conduits, Aluminium Conduits, Pipeconduits, Electrical Conduit Fitting, Junction Box, C Channel, Flexible Conduit, Power Bridge System
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Lonwow Industry Co., Ltd. is a leading manufacturer of electrical metal conduits and fittings in Jiangsu Province, China.

Qingdao Restart New Material Technology Co., Ltd

5 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Centralized Lubrication Hose, Lubrication Accessories, Test Hose and Fittings, R7/R8 Hose, TPU Hose, Hydraulic Hose, Jack Hose, Sewer Cleaning Jet Hose, Polyurethane Elevator, Handrail Belts
Country/Region:
Shandong, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Qingdao Restart New Material Technology Co., Ltd is a famous company producing thermoplastic hoses and lubrication hose. We not only provide customers with reliable and cost-effective standard products, but also continuously develop and launch new products according to their latest requirements, meeting the special requirements of the industry.

Hangzhou Prostar Enterprises Ltd.

5.0
Main Products:
Strut Channel, Pipe Hanger, Pipe Clamp, Strut Clamp, Clevis Hanger, Loop Hanger, Swivel Band Hanger, IMC Conduit, EMT Fittings, EMT Conduit
Country/Region:
Zhejiang, China
Sample Service:
Sample Available
Company Profile:
Hangzhou Prostar Enterprises Ltd. Is the most professional company of Construction Electricity Wiring System in Hangzhou, China, which establishes a pretty stable business relationship with different customers all over the world.

Hengrun Group Co., Ltd.

26 yrs
·Manufacturer/Factory & Trading Company
Main Products:
GRP Pipe Pccp Pipe, FRP Grille, FRP Tanks, Pccp Pipe, Pultruded Profiles, FRP Septic Tank, FRP Water Tank, FRP Cooling Tower, Pipe Fittings
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Founded in 2001, Hengrun Group Co., Ltd. is one of the earliest manufacturers specializing in FRP (glass reinforced polymer) composite materials in China. With a long history of more than two decades, Hengrun Group has always been committed to innovation, quality and excellence and has become a leading enterprise in the composite materials industry.

Hangzhou Topele Import And Export Co., Ltd.

Main Products:
BS4568 Gi Conduit and Fittings, EMT Conduit and Fittings, Aluminum Conduit and Fittngs, IEC61386 Conduit and Fittings for Chile Market, IMC/Rigid Conduit and Fittings, Flexible Conduit and Fittings, Strut Channel and Fittings, Conduit Bender, Weatherproof Boxes and Conduit Body, Cable Tray and Trunking
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hangzhou Topele Import & Export Co., Ltd. is a professional Electric conduit and Strut channel fittings etc. Supplier integrating production, sales and service. Mainly produces Electric conduit and accessories. The company is located in the southeastern coastal area of China and has a rapid economic growth and beautiful scenery --- Hangzhou. Since its establishment in 2008, the company has experienced three leaping developments. It opened up markets in Southeast Asia and South America. In 2014, at the call of national cross-border e-commerce, cross-border sales of Amazon US, UK, eBay, etc. Were launched. In 2019, participated in the local promotion of Peru market, laying a solid foundation for the export market in 2020. TOPELE improves itself every day to meet the high demands of the international markets, and has multiple certificates, such as UL certificate, ISO and etc. Our aim are dedicated to improving people's lives and the environment with power and cable management technologies that are more reliable, efficient, safe and sustainable.

DONG GUAN FUYUXUAN ELECTRONICS CO., LTD.

17 yrs·5.0
·Manufacturer/Factory
Main Products:
Corrugated Pipe, Corrugated Hose, Corrugated Conduit, Plastic Hise, Nylon Corrugated Pipe, Plastic Bellows, PVC Tube, Heat-Shrinkable Tube, Silicone Tube, Knitting Casing
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongguan Fuyuxuan Electronics Co., Ltd. Was established in 2010 and is located in Humen Town, a famous manufacturing town in China's Pearl River Delta Special Economic Zone. Dongguan Fuyuxuan Electronics Co., Ltd. is a professional manufacturer integrating R&D, production and sales of plastic hoses.

Qingdao Cuishi Plastic Machinery Co., Ltd

Main Products:
PVC PP PE PPR Pipe Production Line, Plastic Pipe Machine, Plastic Extrusion Machine, Pipe Extrusion Machine, Plastic Profile Extrusion Machine, Plastic Sheet /Board Extrusion Machine, China PVC Board Extrusion Line, Injection Mould, China Board Extrusion Line Manufacturer, China Hollow Extrusion Line Manufacturer
Country/Region:
Shandong, China
Sample Service:
Sample Available
Company Profile:
Qingdao Cuishi Plastic Machinery Co., Ltd. Was established in 1999 and is located in Jiaozhou City, Qingdao, China, near to Qingdao Jiaodong International Airport. Export to Qingdao Port, it has unique transportation convenience

Phoenix Electric Power Co., Ltd.

Main Products:
Cable Clamp, Cable Lug, Insulators, Cable Terminal, Fuse-Cutout, Cable Connector, Lightning Arrester, High Voltage Switches, Heat-Shrinkable Tubing, Cold Shrinkable Cable Termination Kits
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Phoenix Electric Power Co., Ltd. is located in Leqing City, Zhejiang Province. It is a leading electric power enterprise with two major production and research and development bases in Zhejiang and Jiangsu, integrating research, development, production, and sales. Phoenix Company's main products include power fittings, high-voltage electrical equipment, cable accessories, electrified railway contact network accessories, and plastic products. It was formerly a centralized unit of the Ministry of Electric Power Industry and a copper and aluminum parts manufacturing base in Zhejiang Province. It is a QA1 level supplier for China's nuclear industry construction, and a centralized bidding and procurement enterprise by State Grid and Southern Power Grid Corporation. The product is widely used in national key projects such as the Two Grid Transformation, Huhutong, West East Power Transmission, Three Gorges Project, and Daya Bay Nuclear Power Plant, and is exported to more than 40 countries and regions in Asia, Europe, the United States, and Africa. Phoenix brand cable terminals, power fittings, cable accessories and other products enjoy a high reputation both domestically and internationally.

Shandong Jianlong Plastic Co., Ltd.

24 yrs
·Manufacturer/Factory & Trading Company
Main Products:
PVC Well Drilling Pipe, PVC-U Water Supply Pipe, PVC-U Drainage Pipe, CPVC Pipe, PE Water Supply Pipe, PVC Threading Series Pipe, PPR Water Supply Pipe, Pert Floor Heating Pipe, Pex Pipe
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Jianlong Plastic Co., Ltd. is a large company with the annual production capacity of 50, 000 tons, and it is the manufacturer with strong financial and technical capabilities, was founded in Ju County, Rizhao City, Shandong Province, China in 1992. The company possesses modern standard workshops and management system, and products are specialized on PVC well drilling pipe, Water Pipe, UPVC, CPVC, HDPE, PPR, PE-RT, PEX, MPVC pipes and fittings area, which with many authorized certificates and honors, such as quality and environment system certificates, health and safety management system certificates and other honors from National and Provincial Government departments!

HUBEI RISINGSTAR IMPORT AND EXPORT CO., LTD.

3 yrs
·Trading Company
Main Products:
Colored Stone Metal Tile, WPC Wall Panel, PVC Gutter System, Roofing Tile, Jungle, Euro Tiles
Country/Region:
Hubei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hubei Risingstar Import and Export Co., Ltd. is a highly trusted and experienced company that specializes in the production and export of building materials such as colored stone metal tiles, WPC wall panel, carbon crystal plate and PVC gutter system. With years of rich industry experience, we can provide innovative solutions that meet the highest quality and reliability standards.

WANGSU (GUANGZHOU) TECHNOLOGY CO., LTD

6 yrs
·Trading Company
Main Products:
Plastic Seal, Cable Seal, Nylon Cable Tie, Bolt Seal, Meter Seal, Terminal Block, Wire Connector, Expansion Plugs, R-Type Clamp, Magic Velcro Tape
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
WANGSU (GUANGZHOU) TECHNOLOGY Co., Ltd. Was founded in 2008 in Baiyun District, Guangzhou.

Dongguan Zhonghe Electronics Co., Ltd.

Main Products:
Corrugated Conduit Pipe, Braided Cable Sleeve, Heat Shrink Tube, Cold Shrink Tube, Spiral Wrap, Fiberglass Sleeving
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongguan Zhonghe Electronics Co., Ltd. is a specialized and innovative technology-based enterprise that specializes in the development, production and sales of polymer modified protective materials and provides one-stop solutions. It was founded in 2010 and is headquartered in Qingxi Town, Dongguan City. In 2020, a branch factory was established in Jiangsu with a construction area of more than 15, 000 square meters.

Suzhou Feibo Heat & Cold Shrinkable Products Co., Ltd.

17 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Low & High Voltage Heat Shrink Tubing 2-400 mm, Cold Shrink Tubing, 3:1 Ratio Heat Shrink Tubing, Adhesive Lined Medium Wall Heat Shrink, 1-35 KV Heat & Cold Shrink Termination
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Suzhou Feibo Heat & Cold Shrinkable Products Co., Ltd., located in Jinxin Road No. 2848, Jinjiaba Town, Wujiang District, Suzhou, Jiangsu, China (Mainland), with several years of industry experience.

Anhui Jagrow Auto Parts Co., Ltd.

5.0
Main Products:
Performance Parts, Exhaust System, Air Intake System, Cooling System, Carbon Fiber Parts, Exhaust Downpipe, Exhaust Manifold, Exhaust Catback, Oil Cooler, Turbo Intercooler
Country/Region:
Anhui, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
JAGROW was founded in 2014 by Jason Cheng, who took the lead in the field of aftermarket performance radiators based on his understanding and expertise in the automotive parts industry. After several years of development, JAGROW has achieved a certain scale and expanded its product range to turbo intercoolers, oil coolers, aluminium pipe kit and relevant parts.

Anhui Youyu Electric Heating Equipment Co., Ltd.

15 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Underfloor Heating Mat, Self-Regulating Heating Cable,Single & Twin Conductor Heating Cable,Constant Wattage Heating Cable,Outdoor Snow Melting,Electric towel rack,Room Thermostat
Country/Region:
Anhui, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Anhui Youyu Electric Heating Equipment Co. Ltd. Is located in 9 Zhijing Five Road, southern district of Wuhu high and new tech development zone in Anhui, the factory covers an area of more than 20 acres, and has more than 8000 square meters of production workshop, which is an energy conservation, environmental protection and high-tech enterprise with independent intellectual property rights, professionally engaged in researching and developing, designing, producing, selling self-control temperature and electric tracing band, constant power cable, silicon rubber cable, heating cable, MI heating cable, thermal control intelligent control system, explosion-proof electric apparatus and distribution box, special electric and heat accessories and related products, and integrated in technical consulting and project planning, designing and constructing, etc.

Jiangsu Dierite Optoelectronics Technology Co., Ltd.

5.0
Main Products:
PLC Splitter, Fiber Optic Cable, Adapter, Patch Cord, Optical Fiber, FTTH Drop Cable, Armored Cable, Accessories, ADSS Cable, Fig-8 Aerial Cable
Country/Region:
Jiangsu, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Jiangsu Dierite Optoelectronics Technology Co., Ltd. is a leading manufacturer of high-quality optical fiber cables and accessories, founded in 2010. With a comprehensive R&D center, cutting-edge production facilities, and a prime location in Changzhou, Jiangsu, near major ports like Shanghai and Ningbo, Dierite offers fast, reliable global deliveries. Our core focus is on providing top-tier solutions and OEM services to operators, system integrators, and wiring providers. Our product line includes fiber optic cables, patch cords, PLC splitters, adapters, and attenuators, serving telecommunications, broadband, and networking markets.

Xuancheng Xinhechuan Machinery Co. Ltd.

4 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Cable Drag Chain
Country/Region:
Anhui, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Xuancheng Xinhechuan Machinery Co., Ltd. is a professional manufacturer specializing in the R&D and production of cable drag chains and machine tool protection components. Backed by years of solid experience in the machinery manufacturing industry, we focus on providing reliable motion protection solutions for global customers in the fields of CNC machine tools, automation equipment, industrial robotics, engineering machinery and other industrial applications.

Changsong Electric Co., Ltd.

16 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Distribution Box, Circuit Breaker, PV Combiner Box, Switchgear, Compact Transformer Substation
Country/Region:
Zhejiang, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Chang Song Electric Co., Ltd. Founded in 1995, with more than 35000M2 manufacturing space, 260 employees, it becomes one of the leading manufacturer of industrial electric product in China. As well as one of the earliest factories in the line with nearly 20 years experience in producing and developing for electric equipment.