
Customization support
Provide input and output voltages, overall dimensions or a transformer reference photograph to begin a custom design discussion. Discuss the design and customization requirements with our United States contacts.


M&D — Elk Grove, California, United States.
M&D is based in Elk Grove, California, United States. Our website brings together transformers, filters, inductance coils and circuit boards, with product photographs and component information to help you discuss your requirements.
The product catalog covers 13 categories, including switching power transformers, high-voltage transformers, low-frequency transformers and reactors, filters, filter inductors, inductance coils and PCB boards.
Our United States contacts, Mr. Yu and Mr. Li, are available for product inquiries. Share your selected product reference, electrical requirements, dimensions and any available drawings to start a conversation.
Find us at 9900 Kapalua Ln, Elk Grove, CA 95624, or email [email protected].
Meet our United States contacts ↗From shaping a winding to preparing its connections and checking the assembly, each operation has a purpose. Explore six equipment types used in component production.


Select a process below
Winding equipment places wire around a bobbin or core to form the coil. Wire routing, turn placement and the winding arrangement are central to the component’s construction.
Tin-dipping equipment applies solder to designated terminals or exposed wire ends. This prepares the connection surfaces for the next assembly operation.
Inspection equipment supports checks during production. The inspection plan is selected for the component and its requirements, including the relevant electrical, dimensional or visual checks.
Dispensing equipment delivers process material to selected areas of an assembly. The material, application points and amount depend on the product design and manufacturing requirements.
Varnish impregnation introduces insulating varnish into the winding assembly. The process supports insulation and winding stability; the varnish system and process conditions are chosen for the component.
Infrared equipment supplies heat for drying in production. The heating profile and duration depend on the material system and the component’s process requirements.
Explore potential applications in communications, transportation, aviation, aerospace, radar, shipboard systems, vehicle electronics, chemical processing and laboratory equipment.





Application photographs illustrate the sectors described in the company profile. Requirements and suitability are reviewed for each project.

Provide input and output voltages, overall dimensions or a transformer reference photograph to begin a custom design discussion. Discuss the design and customization requirements with our United States contacts.

Discuss the inspection and testing requirements for your component, including dimensional checks, electrical checks and any required documentation.

Contact our United States team to discuss product requirements, customization questions, delivery arrangements and follow-up support.