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Zhuzhou Zhaoxu Technology Co., Ltd. (Sun-Mold) has been a trusted manufacturer of custom bobbins, bases, clamps, terminals, and heat sink accessories since 2007. Delivering high-quality magnetic components for power electronics worldwide.
Zhuzhou Zhaoxu Technology Co., Ltd., operating as Sun-Mold, has been a leading manufacturer of precision transformer accessories since 2007. We specialize in custom-designed bobbins, bases, clamps, terminals, and heat sink components for the global electronics and power supply industries.
With facilities in Zhuzhou, Hunan Province and Dongguan, Guangdong Province, we combine advanced tooling, strict quality control, and responsive customer service to deliver reliable components that meet exacting international standards.
We offer a comprehensive selection of standard and custom transformer accessories, including bobbins, bases, clamps, terminals, and heat sink components.
High-precision bobbin for EFD core types, ideal for compact power supplies and LED drivers.
Robust base for PQ cores, designed for high-power applications with excellent thermal stability.
Secure metal clamp for RM core assemblies, ensuring mechanical integrity and EMI shielding.
Durable terminal block for EI transformers, supporting high current and reliable connections.
Efficient bobbin for ETD core shapes, optimized for low-profile and high-efficiency designs.
Surface-mount compatible bobbin for automated assembly in modern electronics.
Heavy-duty clamp for UU core transformers, providing structural support and vibration resistance.
Precision-molded base for EP core transformers, ensuring alignment and insulation.
Specialized clamp for ER and ERL core types, offering secure fastening and thermal management.
Thermal management components including ED, EQ, and EC series accessories.
Shielded base for pot core transformers, minimizing EMI and enhancing performance.
Fully customizable bobbins, bases, and clamps tailored to your exact specifications.
We combine precision engineering, rigorous quality control, and customer-focused service to deliver reliable components.
In-house mold and tool making ensures precision, consistency, and fast turnaround for custom designs.
Comprehensive inspection and testing procedures including dimensional checks and material verification.
Serving clients across North America, Europe, and Asia with reliable logistics and responsive support.
We use high-temperature thermoplastics such as PBT, PA66, and PET, meeting UL94V-0 flammability standards. Material selection is based on thermal, mechanical, and electrical requirements.
Yes, we specialize in custom transformer accessories. Provide your specifications, drawings, or samples, and we’ll develop a solution tailored to your needs with fast prototyping.
We manufacture components for EFD, PQ, RM, EI, ETD, EPC, EP, ER, ERL, UT, UU, and other standard and custom core shapes.
Standard products: 7–10 days. Custom designs: 15–25 days depending on complexity and tooling requirements. We offer expedited options upon request.
Yes, we offer free samples for qualified customers. Contact us with your requirements and shipping details.
Reach out to discuss your custom transformer accessory needs. We’re ready to support your next project.
Andy
+86 13538435115
andy.sunmold@gmail.com
Zhuzhou & Dongguan, China
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