HomeSupplier Discoveryarrow-rightManufacturing & Processing Machineryarrow-rightBrick Making Machinearrow-rightElectric Engineering Machine Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
More
Province & Region
More
about electric engineering machine
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

electric engineering machine10,000+ factories verified

Jinan Wenteng Test Instrument Co., Ltd.

12 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Universal Testing Machine, Tensile Testing Machine, Material Testing Machine, Compression Testing Machine, Fatigue Testing Machine
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Jinan Wenteng Testing Instrument Co., Ltd., located in the beautiful spring city of Jinan, Shandong Province, China, is a diversified high-tech enterprise that integrates design, research and development, production, sales, and comprehensive after-sales service. Since its establishment in the early 21st century, the company has adhered firmly to the principles of innovation, sustainable development, and customer satisfaction as the highest standard.

Shandong Xiangqiu Truck Maintenance Equipment Co., Ltd.

5.0
Main Products:
Riveting Machine, Brake Lining Remover, Bearing Oiler, Bearing Cleaning Machine, Tire Protection Trailer, Bearing Oiling Cleaning Machine
Country/Region:
Shandong, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Our company was founded in 2011, is located in Shandong Province Linyi City Hedong Economic Development Zone, logistics developed, convenient transportation. The company mainly engaged in large and medium-sized transport vehicle repair and maintenance tools research and development, production and after-sales service, technical guidance. The company has strong technical force and new product research and development ability, has obtained 6 national patents, passed the national quality system certification, international CE certification, in the domestic industry leading position. The main products are: Shovel machine, oil injection machine, bearing cleaning machine, special grease injection machine for axle, oil injection cleaning machine, hydraulic riveting machine and wheel protection trailer, etc. SOARING UPKEEP, owner of its own brand.

Henan Symbol Valiant Machinery Equipment Co. Ltd.

Manufacturer/Factory & Trading Company
Main Products:
Hole Digger, Drilling Machine, Ditcher, Digging Pit and Pole Erection Machine, Tractor Crane, Hydraulic Digger Derrick Tractor, New Energy Tricycle Dump Truck, Earth Auger, Water Drilling Machine, Used Excavator
Country/Region:
Henan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Henan Symbol Valiant Machinery Equipment Co. Ltd. Is a professional manufacturer of hydraulic drilling machines, Located in the center city of China - Gongyi city, Zhengzhou, Henan Province. Covering an area of about 7000 square meters.

Jwell Machinery( Liyang)Co., Ltd.

15 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Extrusion Machine Line, Plastic Extruder, Plastic Pipe Extrusion Machine
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Jwell Machinery Manufacturing Co., Ltd., founded in 1997, is a professional manufacturer of plastic extrusion machinery and chemical fiber spinning complete sets of equipment. It has 7 production bases in Haining, Zhejiang, Taicang, Changzhou, Liyang, Shanghai, Zhoushan, Zhejiang, Foshan, Thailand, etc. The total area is more than one thousand mu. Headquartered in Jiading, Shanghai, the company has more than 3000 employees, including more than 480 technical management personnel. The company has a high quality research and development team and experienced mechanical, electrical debugging engineer team, as well as advanced mechanical processing base and standard assembly workshop, the annual production of more than 3000 sets of high-grade plastic extrusion production line and other complete sets of equipment. Company partners have Jin Wei intelligent technology Co., Ltd., zhejiang Jin Wei machinery (haining) Co., Ltd., zhejiang Jin Wei pipeline equipment manufacturing Co., Ltd., Shanghai Jin Wei extrusion machinery manufacturing Co., Ltd., Shanghai Jin Wei pipeline equipment manufacturing Co., Ltd., Shanghai Jin Wei sheet plate film equipment manufacturing Co., Ltd., Shanghai while JVC Jin Wei chemical fiber machinery manufacturing Co., Ltd., Shanghai machinery manufacturing Co., Ltd., zhoushan Jin Wei screw manufacturing Co., Ltd, suzhou Jin Wei chemical equipment Co., Ltd., suzhou Jin Wei hollow technology Co., Ltd, suzhou Jin Wei chemical fiber engineering technology Co., Ltd., suzhou Jin Wei machinery manufacturing Co., Ltd, suzhou jewell precision machinery Co., Ltd Company, suzhou Jin Wei sheet plate film intelligent equipment Co., Ltd., liyang Jin Wei machinery Co., Ltd., changzhou Jin Wei machinery Co., Ltd., changzhou Jin Wei extrusion machinery manufacturing Co., Ltd., changzhou Jin Wei pipeline equipment manufacturing Co., Ltd., changzhou Jin Wei pipeline technology Co., Ltd., changzhou Jin Wei chemical equipment Co., Ltd., changzhou Jin Wei board equipment manufacturing Co., Ltd., changzhou Jin Wei plate membrane technology Co., Ltd., changzhou big cloud environmental protection technology Co., Ltd., changzhou Jin Wei intelligent chemical equipment Co., Ltd., dongguan while JVC machinery manufacturing Co., Ltd., foshan's intelligent equipment Co., Ltd., 26 professional company and nine large gold Processing workshop and three heat treatment nitriding workshop. More than 10 of them are high-tech enterprises.

Yancheng Link Import and Export Co., Ltd

Manufacturer/Factory
Main Products:
Wire Saw, Wall Saw, Water Jet, Concrete Cutter, Drilling Machine, Saw Blade, Diamond Wire Saw Rope, Road Cutter, Pressure Water Cleaning, Diamond Wire
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Yancheng Like Import and Export Co., Ltd., headquartered in Yancheng City, Jiangsu Province, China, is dedicated to serving the mining and construction industries by providing technologically advanced products and services to global agents and users. Our company offers customized services and undertakes OEM/ODM customization orders. Since its establishment, we have consistently adhered to the management principles of "quality first, customer-centricity, and integrity as our foundation, " striving to meet clients' potential needs to the greatest extent possible.

Anping County Boming Wire Mesh Machinery Manufacturing Co., Ltd

8 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Mesh Welding Machine, Chain Link Fence Machine, Grass Fence Making Machine, Barbed Wire Machine
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Anping Boming Wire Mesh Machinery Manufacturing Co., Ltd. (BOMING Machinery) is a professional manufacturer and exporter of wire mesh machinery located in Anping County, Hebei Province, China, one of the world's major wire mesh production centers.

Hebei Shinuo Wire Mesh Machinery Manufacturing Co., Ltd.

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Gabion mesh weaving machine, Wire mesh weaving machine, Wire mesh welding machine
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Ounded in 1998, has grown into a leading global GABION equipment provider. 80% of our products have been sold in more than 40 countries or regions, such as the Russia, USA, UK, Canada, Taiwan area, Malaysia, Thailand, Italy, South Africa, North Africa, Iran, India, pH, VN, and Poland etc.

Ningbo Chuanghui Machinery Manufacturing Co., Ltd

18 yrs
·Manufacturer/Factory
Main Products:
Injection Molding Machine
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Ningbo Chuanghui Plastic Machinery Co., Ltd. is located in Ningbo, China, the World's Capital City of Injection Machinery. We are the professional manufacturer of high quality injection machines. We produce various series of injection machines with the clamping stroke from 50T to 1680T and shot weight from 45g to 15000g. All of our products are designed, produced and assembled according to the standard of European Plastic and Rubber Machinery Manufacturer Association. And our products are of strong clamping stroke, high injection pressure, precision and durable.

Henan Geyu Machinery Manufacturing Co., Ltd.

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Pipe Benders,Pipe Shrinking Machine Series,Polishing Machine Series,Punching Machine Series,Pipe Cutter, etc
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
WanRong Machinery was founded in 2001, covers an area of more than 10, 000 square meters, is a pipe wire sheet machinery and equipment manufacturer, is committed to pipe wire sheet cold bending, stamping, cutting, rust removal and other industry technology innovation and research and development, continue to bring more advanced pipe sheet processing technology experience for all walks of life.

Fuzhou Mining Imp.&Exp. Co.,Ltd

Main Products:
Pneumatic Rock Drill & Hammer, Diamond Core Drill Machine, Drill Press, Road Marking Machine, Drill Rods & Bits, Rock Splitter, Hose Coupling
Country/Region:
Fujian, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Fuzhou Mining Imp. & Exp. Co., Ltd. Was established in 2012. We are a specialized manufacturer and supplier of rock drill, jackhammer, drilling tools, drill press, diamond core drill, road marking machine, hose couplings, and other related equipment. OEM & ODM services available. Our products are widely used in mining, quarrying, drilling projects, road construction, processing plants, civil engineering, and other industries.

Hangzhou Civit Instrument Equipment Co., Ltd.

5.0
Main Products:
Soil Aggregate Rock Testing Equipment, Cement Mortar Testing Equipment, Concrete Testing Equipment, Asphalt Testing Equipment, Scientific Lab Equipment, Survey Instrument
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Hangzhou Civit Instrument Equipment Co., Ltd. is professional manufacturer supplier of Testing equipments in construction industry and scientific lab, we specialized in dealing Soil Rock Aggregate testing equipment, Cement Concrete testing equipment, Asphalt testing equipment, also supply Steel testing equipment, Survey instrument, Scientific lab equipment, General labware etc.

Hebei Senmine Technology Co., Ltd.

4 yrs·5.0
Main Products:
Diamond Drill Bit, Diamond Core Drill Bit, Diamond Saw Blade, Diamond Grinding Wheel, Vacuum Brazed Diamond Hole Saw, Diamond Profile Grinding Wheel, Brazed Diamond Core Drill Bit, Diamond Core Drill Bit Set, Electric Ring Saw Machine, Concrete Core Drill
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hebei Senmine Technology Co., Ltd is a high-tech enterprise integrating with R&D and Manufacturing of Diamond Core Drill Bits.

Jinan Liling Testing Machine Co., Ltd

12 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Electronic universal testing machine, pressure testing machine, testing machine accessories.
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Jinan Liling testing machine Co., Ltd. is a high-tech enterprise integrating R & D, production and sales. The company is located in Jinan, a spring city famous for Confucius and Mencius culture. The company's continuous innovation of research and development capacity, excellent product quality, spacious and bright production environment, has successfully realized the increase of output and sales volume year by year. The company's products are not only widely used in domestic research institutes, colleges and universities, highway, railway, construction, steel, aerospace and other fields of national economy, but also exported to Russia, Brazil, India and other overseas countries.

Jiangsu Goodeng Heavy Machinery Technology Co., Ltd

16 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Trenchless Machine, Drilling Rig, Drilling Machine, HDD Rig, HDD Machine, Drill Rig, Drill Machine, Drilling Equipment, Construction Machinery
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
"Goodeng Machine", founded in May 2002, is a national high-tech enterprise, which is specialized in research & development, manufacturing, sales and service for trenchless equipment. Our main products are GD/GS series of horizontal directional drilling machine and accessories.

Shandong Liqiang Machinery Co., Ltd

Main Products:
Rotary Drilling Rig, Cfa Drilling Rig, Bore Pile Drilling Rig, Pile Driver, Piling Rig, Wheel Rotary Drilling Rig, Photovoltaic Support Pile Driver, Excavator Modified Rotary Drilling Rig
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
The company was founded in 2010. Its predecessor was "Tengzhou Qiangli Hydraulic Machinery Factory" which was established in 1990. The company has built 6 production and processing workshops, including a machine processing workshop, a CNC cutting workshop, a welding workshop, an assembly workshop, a spraying workshop, and a sandblasting workshop.

JIANGSU XUAN XUAN HEAVY MACHINERY CO., LTD.

12 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Pipe Jacking Machine, Pipe Jacking Tunnel Machine, Rock Pipe Jacking Machine, Auger Boring Machine
Country/Region:
Jiangsu, China
R&D Capacity:
ODM Service
Company Profile:
Jiangsu Xuanxuan Heavy Machinery Co. Ltd is affiliated with Weiqiang Group which is founded in 1989, More than 30 years of history, It's located in Changzhou city, Jiangsu Province, The company attaches great importance to product quality management, on this basis, Company uphold core technology in the pipe jacking machine design field and rich experience in construction, Now, it Has been designed pipe jacking equipment which is applicable to variety of geological conditions. Products include NPD slurry pipe jacking machine. TPD earth pressure balance pipe jacking machine. YSN series rock pipe jacking machine. JD retangle pipe jacking machine, shield machine, spare parts of pipe jacking machine, Hydraulic oil cylinder, hydraulic system, lubricating system, pneumatic system, PLC control system and non-standard equipment. The company's production of pipe jacking equipment widely adopted world famous brand accessories which is greatly improves our product quality, our pipe jacking machine are able to cope with the harshest underground soil conditions. The company attaches great importance to the development of new technology and new products.

Suzhou Qiantong Instrument Equipment Co., Ltd.

12 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Universal Material Testing Machine, Zod Impact, Melt Flow Rate Tester
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Suzhou Qiantong Instrument Equipment Co., Ltd is a well-known company specializing in the manufacturing and sale of high-end testing machines and laboratory equipment.

Hangzhou Welping Machinery Equipment Co., Ltd.

5.0
Main Products:
Butt Fusion Welding Machine, Butt Welding Machine, HDPE Pipe Welding Machine, Electrofusion Welding Machine, HDPE Pipe Fitting, Plastic Hand Extruder
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
To help customers success in the field of plastic pipe jointing, WELPING had been focusing on thermoplastic welding equipment developing, manufacturing and selling for more than 15 years. We aim to bring industrial level design, performance and quality together, to help you build reputation.

Alpha Technical Industrial Co., Ltd.

Main Products:
Cable Extrusion Line, Cable Machinery, Wire Drawing Machine, Cable Pay off Machine, Cable Sheath Extrusion Line, Cable Extruder, Cable Bobbin, Cable Lay up Machine, Cable Stranding Machine, Continuous Casting Machine
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Our factory was established in 1992. It is a key enterprise integrating scientific research and development and production of special equipment for wire and cable and various efficient energy-saving extrusion lines, cable take up machine, cable pay off machine, cable jacket extrusion line, cable caterpillar, cable stranders, etc...The company has a technical management team with high technical quality, strong research and development capabilities, in cable industry. With more than 20 years of manufacturing experience and strong technical strength, good business reputation and sales performance, it has won The trust and praise of customers at home and abroad, our machineries are popular all over the world, like USA, UK, Philippines, Saudi Aribia, Malaysia, Indonesia, Thailand, Neither land, Australia, etc...

Foshan Jundelong Machinery Equipment Co., Ltd.

5.0
·Manufacturer/Factory & Trading Company
Main Products:
Pipe Bending Machine, Hydraulic Punching Machine, Laser Cutting Machine, Pipe Bender, Tube Bender, Hydraulic Notching Machine, Tube Laser Cutting Machine, Metal Circular Saw Machine, Pipe Cutting Machine
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
We are a professional manufacturer focused on pipe processing machinery based in Foshan, China. With rich industry experience, we specialize in R&D, production and export of tube bending machines, punching machines, shrinking machines and cutting machines.

Wenzhou Shenrui Machinery Equipment Co., Ltd.

5.0
Main Products:
Od Mounted Pipe Cutting and Beveling Machine, ID Mounted Pipe Beveling machine, Portable Flange Facing Machine, Line Boring and Welding Machine, Orbital Pipe Cutting Machine, Automatic Plate Chamfering machine, Manual Plate Beveling Machine
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Wenzhou ShenRui machinery equipment Co., Ltd., founded in 2021, is located in wenzhou city in zhejiang province coastal economic development zone, the main products are ID mounted Flange facing machine, OD mounted Flange facer machine, automatic steel plate beveling milling machine, od mounted Split Frame pipe cutting and Beveling machine, ID mounted pipe beveling machine, Orbital pipe cutting machine, pipe welding, etc., and the production, research and development, sales in the integration, our workers 30-60 people, 12 R & D personnel, sales team 10-15 people, 3-7 people quality inspection, plant area of about 2000 square meters, Stock products can be delivered within 1-2 working days, custom-made about 7-30 working days, humanized iron box or export wooden box packaging, by sea, air, railway, land or by express delivery, strict quality inspection and video confirmation before shipping.

Xingtai Shengjiu Intelligent Equipment Co., Ltd.

Main Products:
Tunnel Car Washing Machine, Contactless Car Washing Machine, Reciprocating Car Washing Machine, Bus Wash Machine, Truck Washing Machine (Customizable), Support Customization of Various Car Washing and
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Company Profile:
     Xingtai Shengjiu Intelligent Equipment Co., Ltd. is located in Xingtai City, Hebei Province. It is a diversified technology-based enterprise that integrates the research and development, design, production, sales, after-sales service, washing and beauty project design and construction, commercial operation management, and software service development of intelligent fully automatic car washing machines. Mechanical equipment research and development; Software development; Intelligent basic manufacturing; Manufacturing of car washing equipment; Sales of car washing equipment; Manufacturing of specialized equipment for environmental protection; Sales of specialized equipment for environmental protection; Mechanical parts and component processing; Sales of mechanical parts and components; General equipment repair; Ordinary mechanical equipment installation services, professional design services; Import and export of goods; Technology import and export; General equipment manufacturing, mechanical equipment manufacturing, and development of artificial intelligence application software

Shandong Shunya Machinery Co., Ltd.

4.5
Main Products:
Block Making Machine, Concrete Pole Mould, Concrete Mixing Machine, Concrete Brick Making Machine, Clay Brick Making Machine, Automatic Brick Making Machine, Semi-Automatic Brick Making Machine, Hydraulic Brick Making Machine
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Shunya Machinery Co., Ltd. is a professional manufacturer and supplier of construction machinery, mining machinery and agricultural machinery. Located in Linyi, Shandong Province, the company has 30 years of practical experience, covers an area of more than 60, 000 square meters, has fixed assets of 20 million US dollars and an annual sales volume of 10 million US dollars. It is a major manufacturer of concrete block molding machines and concrete electric pole equipment in Shandong Province.

HENAN QIANGLI MACHINERY CO.,LTD

31 yrs
·Manufacturer/Factory
Main Products:
Rail Grinding Machine, Rail Cutting Machine, Rail Drilling Machine, Rail Tamping Machine, Rail Wrench
Country/Region:
Henan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Different kinds of products are available in our company. We're pleased to get your Inquiry and we will reply you as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective.

Zhengzhou Lead Equipment Co., Ltd.

17 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Shotcrete Machine, Hose Pump, Grouting Plant, Refractory Pan Mixer & Gunning Machine, Hydroseeder
Country/Region:
Henan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Zhengzhou Lead Equipment Co., Ltd. Short name LEC, is a manufacturer specialized in R&D, manufacture and sale of shotcrete machine, gunite machine, gunning machine, grout pump, hose pump, concrete pump, mortar pump, foam concrete machine and other machines.

Anhui Viken Intelligent Equipment Manufacturing Co., Ltd.

6 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Press Brake Machine, Fiber Laser Cutting Machine, Panel Bender, Shearing Machine, Laser Welding Machine
Country/Region:
Anhui, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Anhui Viken intelligent equipment manufacturing Company Limited is located in Bowang District, Ma'anshan City, Anhui Province China. Our company is a professional enterprise of sheet metal processing equipment such as CNC press brake, panel bender, fiber laser cutting machine, laser welding machine, combined punching and shearing machines, punch press, plate rolling machines, machine tool accessories, tool molds, to provide customers comprehensive solutions for sheet metal processing equipment. Our company has rich experience in the metalworking processing equipment manufacturing industry. We are committed to technological innovation and upgrading of sheet metal processing equipment to meet customer needs.

Changsha Mining Equipment Co., Ltd.

5.0
Main Products:
Mine Transport Equipment, Mine Lifting Equipment, Mine Loading Equipment, Mine Drilling Equipment, Mine Crushing Equipment, Mine Grinding&Screening Equipment
Country/Region:
Hunan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Changsha Mining Equipment Co., Ltd. is a professional and reliable supplier of mining equipment under the trakemark of CSME.

Shandong Auchi Machinery Co., Ltd.

5.0
Main Products:
Construction Machinery, Mining Machinery, Excavators, Building Construction Machinery, Packaging Machinery, Drilling Machinery, Lifting Equipment
Country/Region:
Shandong, China
R&D Capacity:
OEM Service
Company Profile:
Shandong Auchi specialized in manufacturing high quality light construction equipments including mini intelligent excavators, Water well drilling machinery and all construction machinery. We are committed to provide excellent products and super service to customers in world wide. We keep focusing on innovation, integrity, contribution to society, benefits to employees. Welcome customers around the world come to visit us and achieve win-win cooperation. We integrate designing, manufacturing and sales service together.

Henan Rowdai Machinery Equipment Co., Ltd.

5 yrs·5.0
·Trading Company
Main Products:
Electric Tapping Machine, Machining Center, Gear Hobbing Machine, Surface Grinding Machine, Band Saw Machine, Drilling Machine, Milling Machine, Lathe Machine, CNC Machine Tool, Bending Machine
Country/Region:
Henan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Henan Rowdai Machinery Equipment Co., Ltd