Yueqing Keldan Technology Co., Ltd.
Founded in 2007 in Yueqing, Wenzhou—China's premier hub for electrical automation equipment—Yueqing Keldan Technology Co., Ltd. has grown into a leading global manufacturer specializing in high-reliability power electronics, including DIN Rail Switching Power Supplies, Enclosed SMPS, Pure Sine Wave Inverters, DC-to-DC Converters, and PWM Solar Charge Controllers.
Driven by continuous technical innovation and strategic market expansion, our international operation department serves clients across North America, Europe, Southeast Asia, and South America. With 18+ years of dedicated industry experience and an in-house engineering team, we deliver design-based and sample-based OEM/ODM solutions engineered to stringent international quality norms.
18+ Years
Industry expertise in power conversion topology
44 Staff Onsite
Certified engineers & skilled operators
3‰ Quality Standard
Defect rate significantly below industry average
Global Export
Multilingual team serving 50+ countries
Modern Manufacturing Workshop
Equipped with automated production lines, modern assembly workshops, and full-load aging test equipment for consistent mass production.










End-to-End Production & Testing Workflow
Every single power unit undergoes multi-stage inspections, automated optical testing (AOI), and 100% full-load burn-in testing prior to dispatch.

SMT Mounting

Reflow Soldering

AOI Optical Testing

Cutting Pieces

Precision Welding

Unit Assembly

Debugging & Tuning

Aging Testing System
Certified International Compliance & Standards
At Yueqing Keldan Technology Co., Ltd., quality is our primary commitment. Our production environment and finished goods are certified under CE, RoHS, CCC, IP67, and ISO9001 standards. With advanced testing equipment and senior R&D engineers, we guarantee high efficiency, long service life, and robust EMC performance for heavy-duty industrial automation applications.
Partner with Yueqing Keldan Technology Co., Ltd.
Looking for reliable DIN rail power supplies, switching units, or customized OEM/ODM power solutions? Contact our sales engineering team today for technical datasheets and competitive pricing.
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