The company was established in August 2004, originally under the name Hangzhou Zhenshi Mold Technology Development Co., Ltd. It was subsequently renamed Hangzhou Purun Technology Co., Ltd. to meet operational needs, and specializes in the manufacturing of motor coils as well as the design and manufacture of coil molds.
The company specializes in the manufacture of motor coils and the design and fabrication of associated tooling. Its capabilities include designing molds for stator bars up to 150 MW/10.5 kV and manufacturing stator bars up to 75 MW/18 kV. It enjoys a solid reputation in the industry and participates in the manufacture of motor coils for major national projects. Its business operations span conventional commercial products, motor coils for military applications, and the R&D of motor coils for boiler water pumps.
We are coils experts
Our Product:stator coils, magnetic pole coils, stator bars, coil molds, coil manufacturing equipment
Product Application
Hydro-generators, steam turbine generators, synchronous condensers, impulse generators, electric motors.
Our Certificate
October 13, 2023: Obtained Quality Management System certification (GB/T 19001-2016/ISO 9001:2015)
January 9, 2024: Obtained Environmental Management System certification (GB/T 24001-2016/ISO 14001:2015)
January 9, 2024: Obtained Occupational Health and Safety Management System certification (GB/T 45001-2020/ISO 45001:2018)
Production Equipment
Stator coil processing equipment: shuttle-type coil winding machine, coil expanding machine, robotic taping machine, stator coil hot-pressing machine.
Stator coil bar processing equipment: electromagnetic wire straightening/cutting/end-stripping machine, insulation paper cutting machine, high-current heating cabinet, taping machine, silver-copper brazing machine.
Magnetic pole coil processing equipment: flat-wire winding machine, oxygen-free annealing furnace, 315-ton hydraulic press.
Coil mold processing equipment: CNC flame cutting machine, 200-ton hydraulic straightening press, CNC lathe, CNC milling machine, wire-cut EDM machine, surface grinder, gantry milling machine.
Production Market
Harbin Electric Machinery Company Limited, Dongfang Electric Machinery Co., Ltd., Hangzhou Hangfa Power Generation Equipment Co., Ltd., Zhongdian Electric Motor Co., Ltd.
Our Service
Pre-sales Service
We provide professional technical consultation and product selection advice based on specific technical requirements for items such as stator coils, magnetic pole coils, stator bars, and coil molds;
Our engineering team assists with customized designs and process feasibility analyses, offering optimal solutions for various applications including hydro-generators, steam turbine generators, synchronous condensers, impulse generators, and electric motors;
We offer complimentary preliminary sample evaluation and drawing review services to ensure product designs meet customer expectations.
In-sales Service
We implement comprehensive quality tracking and control from raw material procurement to final delivery, ensuring every stage meets established standards;
Equipped with advanced manufacturing machinery-including diamond coil winding machines, coil expanders, robotic taping machines, stator coil hot-presses, high-current heating units, silver-copper brazing machines, flat-wire winding machines, oxygen-free annealing furnaces, 315-ton hydraulic presses, CNC flame cutters, CNC turn-mill centers, wire-cut EDM machines, surface grinders, and gantry milling machines-we manufacture products in strict accordance with customer drawings and technical specifications;
We provide regular progress updates and in-process inspection records to ensure timely delivery and consistent quality.
After-sales Service
We provide technical guidance for product installation and commissioning, with on-site technical support available when necessary;
We commit to a rapid response-within 24 hours-regarding any quality issues reported by customers, promptly analyzing the root cause and providing a resolution plan;
We offer long-term spare parts supply to ensure the continued, stable operation of equipment;
We provide ongoing product improvement suggestions and upgrade support based on actual usage conditions;
All products are manufactured and delivered in compliance with our ISO9001:2015 (Quality Management), ISO14001:2015 (Environmental Management), and ISO45001:2018 (Occupational Health and Safety Management) certifications, ensuring reliable quality and guaranteed service.