Industrial Power Solutions Built to Global Standards
Yueqing Keldan Technology Co., Ltd. operates with verified engineering competence, certified electrical safety standards, and end-to-end quality governance for B2B distributors and equipment builders worldwide.
Advanced SMT & Automated Production
Our workshop integrates high-precision automated pick-and-place systems, multi-zone reflow ovens, and Automated Optical Inspection (AOI) to eliminate assembly errors and optimize component placement repeatability.
- High-speed surface-mount technology
- Strict temperature curve management
- High solder-joint integrity & reliability
Comprehensive 100% Burn-in & QC
Unlike standard spot-check procedures, every single power supply and inverter produced at our facility undergoes full-load aging tests and multi-stage parameter calibration before receiving dispatch clearance.
- Automated 100% full-load burn-in racks
- High-voltage dielectric withstand checks
- Overvoltage and short-circuit protection testing
Engineering-Driven OEM & ODM
Supported by senior electrical engineers with over 5 years of SMPS design experience, we customize form factors, circuit topologies, terminal blocks, voltage outputs, and customized labels tailored to OEM client applications.
- Sample-based & drawing-based customization
- Laser-marking & private label packaging
- Flexible MOQs for prototypes & pilot runs
18 Years of Continuous Manufacturing Evolution
Located in Yueqing, Wenzhou — China's central hub for electrical automation — our expansion reflects persistent technological upgrading and global footprint development.
Foundational Inception
Established manufacturing facilities focused on industrial switching power supplies, securing national and international qualification standards.
Global Market Expansion
Established dedicated foreign trade divisions, expanding deliveries to European and Southeast Asian automation sectors and modernizing production facilities.
Modernized Logistics & Branches
Extended technical operations to Shenzhen, restructured production lines to meet high-volume OEM/ODM demands, and established international customer care hubs.
Third-Party Verified Excellence
Fully verified onsite as a Custom Manufacturer by TÜV Rheinland, supplying high-reliability DIN rail supplies and inverters globally.
Rigorous Step-by-Step Production Control
Every industrial power module is produced within strict manufacturing tolerances, safeguarding high reliability under continuous operation.
SMT Mounter Assembly
Automated surface mount placement machines load discrete chipsets and active ICs with high precision across high-density circuit boards.
Reflow Soldering
Computerized multi-zone thermal profiling ensures robust solder joints, preventing micro-voids, cold solder joints, or circuit detachment.
AOI Optical Inspection
High-resolution optical scanners verify component alignment, correct polarities, and solder bridges across every assembled board.
Lead Trimming & Cutting
Precision mechanical cutters trim through-hole component leads to exact tolerances, preventing enclosure shorts and structural fatigue.
Precision Welding
Certified operators execute point-to-point soldering of heavy-duty electrolytic capacitors, inductors, transformers, and terminals.
Module Assembly
Industrial aluminum and flame-retardant enclosures are mechanically fitted with internal thermal pads and mounting hardware.
Debugging & Calibration
Electrical engineers calibrate voltage output pots, measure ripple voltage, and evaluate transient responses under variable input voltages.
100% Aging Testing System
Racks subject each finished unit to continuous full-load burn-in testing to screen and eliminate early-life electronic component failures.
Workshop & Production Line Overview
Real-world glimpses into Yueqing Keldan Technology Co., Ltd.'s manufacturing facilities, assembly workstations, and testing infrastructure.
Partner with an Audited Power Supply Manufacturer
Looking for reliable DIN rail units, LRS switching power supplies, or specialized pure sine wave inverters? Send us your specifications to start your customized evaluation.
