Custom Power Supply Solutions
Strategically located in China, we benefit from advanced manufacturing capabilities and a robust supply chain, enabling us to offer cost-effective and efficient production without compromising on quality.
Our steadfast commitment to excellence and customer satisfaction is evident in every product we craft, ensuring reliability, durability, and performance that exceeds expectations.

Why Our Custom Power Supplies Stand Out
We uphold the highest standards of quality, as evidenced by our rigorous adherence to international certifications like ISO and CE. Our commitment to sustainability is evident in every process, ensuring eco-friendly production methods. With our strategic location in China, we guarantee not only competitive pricing but also rapid turnaround times, ensuring that your projects proceed without delay. Above all, our exceptional customer service ensures a smooth, responsive, and supportive experience from start to finish.
Our Custom Power Supply Solutions
How to Get Your Custom Power Supply
Can I customize the specifications of my power supply?
Yes, we specialize in customizing power supplies to meet your specific voltage, current, and design requirements.
What is the minimum order quantity for custom power supplies?
The minimum order quantity varies depending on the complexity and specifications of the custom power supply. Please contact us for more details.
What are the payment terms for custom power supply orders?
Our payment terms are flexible and can be negotiated based on your order. We generally accept payment via T/T, L/C, or PayPal.
Can you design power supplies with specific safety features?
Yes, we can incorporate safety features such as overvoltage protection, short-circuit protection, and thermal shutdown into our custom power supply designs.
How do you ensure the reliability of your custom power supplies?
To ensure the reliability of custom power supplies, we focus on designing for durability, selecting high-quality components, rigorously testing prototypes, maintaining strict control over the manufacturing process, and conducting burn-in testing to identify potential failures.
What types of custom power supply technologies do you offer?
We offer various technologies including linear, switching, and programmable power supplies, each customizable to meet your specific application needs.
Let's Begin Collaborating on Your Project Today
He consistently provides timely quotes and meets all my delivery deadlines. Truly a dream for any buyer!”
Possesses the design knowledge to identify the right solution and managed to meet our project deadlines.
“Truly remarkable. I greatly appreciate all the effort and time invested, and I will definitely return and recommend this experience to others. Thank you!”
Longjann Tech: Your Power Supply Expert
Longjann Tech is a leader in the power supply industry, committed to providing innovative and reliable solutions. Our expertise lies in creating both standard and custom power systems for diverse applications. Trust Longjann Tech for efficient and advanced power supply technologies that meet your unique needs.
Office Location
- 1276 St Cyr
Ste 106
Saint Louis, MO 63137
Factory Address
- Xitian No.2 Industrial Zone
Guangming, Shenzhen City
PRC, 518106