Shenzhen Keysun Technology Limited
Shenzhen Keysun Technology Limited and Shenzhenshi Zhenhuan Electronic Co.,Ltd was founded in 2008,specialized in external power supply, power adapter, led power supply, Led driver, AC/DC adapter, switching power supply, waterproof Led drivers in Shenzhen, China. KSPOWER (www.keysuntech.com) is one high quality power supply
manufacturer, we also have own brand With more than 17 years of R&D and production experience in power supply solution, professional manufacturing and sales of positive standard power adapter manufacturers, these power supply led driver is perfectly suitable for 3D Printer, Ultrasonic Humidifier, LCD Monitor, LED Lights, HDD Enclosure, CCTV, Car DVR, ADSL, Digital Photo Frame, Tablet PC, mini Refrigerators, Portable DVD, Set Top Box, Security System Products, Massage Products, Electronics products and so on. We strives to bring low cost, fast delivery production to the world. We are committed to minimizing adverse impacts and improving process efficiency in accordance with legislation & energy saving. KEYSUN TECH is required to meet different power supply and led driver requirements of scores of industries with a number of automatic production line and excellent testing equipment, for the production of high quality products to provide a reliable guarantee.
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, and our produ
- Basic Information
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Company Name: Shenzhen Keysun Technology Limited Business Type: Manufacturer Brands: KSPOWER Employee Number: 100~200 Factory Location: 8,9A Floor, Building 2, Fengxing Lane No.1, Fenghuang Community, Fuyong St., Baoan Dist., Shenzhen, Guangdong, China - Trade & Market
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Company slogan: Shenzhen Keysun Technology Limited OEM Overview: KSPOWER accept OEM/ODM customization, including AC/DC Cable length, special connector, power adapter label, PCB solution, logo print and package and so on.
Production Line: Power Adapter Manufacturing Process
1. Design & Prototyping
- Circuit design: Engineers create schematics and PCB layouts using CAD tools, ensuring compliance with safety standards (e.g., UL/IEC).
- Prototype testing: Functional verification, thermal analysis, and EMI/EMC testing are conducted.2. Component Sourcing
- Procurement of key components:
• Transformer cores and copper windings
• Power ICs and MOSFETs
• Capacitors (electrolytic/X7R)
• Connectors (USB-C, barrel jacks, etc.)
- Incoming quality control (IQC) checks for component specifications.3. PCB Assembly (SMT & THT)
- SMT Phase:
• Stencil printing of solder paste
• Pick-and-place machine mounts SMD components
• Reflow soldering (typically 220-250°C peak temperature)
- Through-Hole Phase:
• Manual/auto insertion of larger components
• Wave soldering for THT connections
- AOI (Automated Optical Inspection) verifies solder quality.4. Transformer Production
- Bobbin winding with enameled copper wire
- Core assembly (EE/EI/ferrite types)
- Varnish dipping for insulation and vibration resistance
- Inductance and turns ratio testing5. Assembly & Integration
- Housing assembly: Injection-molded plastic cases with UL94-V0 flame rating
- Potting (for industrial units): Filling with thermally conductive epoxy
- Final assembly: Integrating PCB, transformer, and cooling components (heat sinks/thermal pads)
- Strain relief installation for cables6. Testing & Quality Assurance
- Electrical Tests:
• Load regulation (±5% typical)
• Ripple/noise measurement (<150mVpp)
• Short-circuit/overcurrent protection
- Safety Tests:
• Hi-pot test (3kV AC or equivalent)
• Insulation resistance (>10MΩ)
- Burn-in testing (2-4 hours at full load)7. Packaging & Shipping
- Laser marking for certifications (UL, CE, FCC, RoHS)
- Anti-static packaging with protective foam
- Palletization according to shipping requirementsKey Process Controls:
- IPC-A-610 Class II/III standards for PCB assembly
- 100% electrical testing before packaging
- Traceability system for batch trackingThis end-to-end process typically takes 15-30 days depending on order complexity, with automated lines achieving >95% first-pass yield in modern facilities.
About quality management: KSPOWER strives to meet the various safety and quality standards that are recognised across the world. The process requires stringent checks and testing conducted by both the in-house teams and approved test houses. By achieving and constantly maintaining these standards, KSPOWER can provide the best and most consistent products for all power solutions.
KSPOWER has been dedicated to power supply manufacturing for over a decade, guided by the core value of “focusing wholeheartedly on doing one thing well.” With a comprehensive and rigorous production process—from component selection and automated SMT to multiple aging tests and final inspections—we ensure every power supply delivers both exceptional quality and cost-effectiveness. At KSPOWER, our commitment to quality and manufacturing excellence earns lasting trust.
At KSPOWER, quality control is a systematic and integrated process. We have a complete quality inspection framework covering all stages—from Incoming Quality Control (IQC) and In-Process Quality Control (IPQC) to Outgoing Quality Control (OQC)—with dedicated professionals overseeing each step. Backed by an ISO-certified system and an experienced quality team, KSPOWER builds excellence through precision, delivering truly reliable power solutions to our customers.
Services: R&D Capabilities of a Power Adapter Manufacturer
KSPOWER possesses strong "Research & Development (R&D)" capabilities, enabling us to design and produce high-performance, reliable, and innovative power adapters for various applications. Our R&D strengths include:
1. Advanced Power Electronics Design
- Expertise in "high-efficiency topologies" (Flyback, LLC Resonant, PFC + PWM)
- Custom solutions for low standby power (<0.1W)
- Optimization for energy efficiency (DoE Level VI, CoC Tier 2, ErP)2. EMI/EMC Optimization
- EMI/EMC compliance design (FCC, CE, CISPR32 Class B) with minimized noise
- Use of GaN (Gallium Nitride) and SiC (Silicon Carbide) for high-frequency, low-loss designs3. Mechanical & Safety Engineering
- Compact and rugged enclosure design (IP68 waterproof, shock-resistant)
- Compliance with global safety standards (UL, TUV, CCC, KC, PSE)4. Customization & OEM/ODM Support
- Tailored solutions for consumer electronics, medical, industrial, and automotive applications
- Firmware customization for intelligent power management
- Global certification support (ENERGY STAR, ErP, RoHS, REACH)Why Choose Our R&D Team?
✅ Innovation-driven – Continuous development of next-gen power solutions
✅ Cost-optimized designs – Balancing performance and manufacturability
✅ Full compliance– Meeting international regulatory requirementsOur R&D team collaborates closely with clients to deliver cutting-edge, reliable, and efficient power adapters for diverse market needs.
Our Team: 
- Factory Information
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Market name: North America,South America,Western Europe,Eastern Europe,Middle East,Africa,Worldwide Contact Person: Mrs.JessicaWong Contact Phone: 86-0755-81461285