Our Products

One-Stop Power Product Line

Choose from a complete range of power products designed to protect equipment, improve efficiency, and keep systems running smoothly—from voltage regulation to backup and conversion.

Tell us your input/output voltage, kVA, application, and country standard—we’ll recommend the right model.

Voltage Stabilizer

Voltage Stabilizer

30 years of independent R&D and production for voltage regulation solutions across home, commercial, and industrial use.

step up and step down transformers

Transformer

Step-up/step-down conversion and customized winding solutions for multiple voltage standards.

Battery Charger

Battery Charger

Efficient DC–AC conversion with multi-protection and smart cooling control.

24V 3 5kw High Frequency Solar Inverter Pure Sine Wave Inverter with 100A MPPT Controller LCD Display

Power Inverters

Multi-level adjustment and protection functions for controlled charging and reliable storage support.

About Us

Voltage Converter Manufacturer for Global Markets

Founded in 2007, Yueqing Johsun Tec Electrical Co., Ltd is a professional manufacturer of power supply products, specializing in voltage regulators, transformers, UPS, inverters, and solar solutions.

With 20+ years of experience, we provide reliable products, flexible OEM/ODM services, and stable delivery to support customers in global markets.

Years Experience
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Johsun Company

R&D & OEM/ODM Mastery

Since 2007, we have specialized in voltage regulators and transformers. We offer full-spectrum customization.

Global Certification

ISO 9001:2008 managed and CE/FCC/IC certified. Our products undergo multiple rounds.

One-Stop Green Energy Solutions

From industrial regulators to solar photovoltaic systems, we provide one-stop integrated power resources.

What we offer

Providing you with stable voltage

Advanced Power Systems

20+ years of expertise in Voltage Regulators, Transformers, and UPS for industrial safety.

Expert OEM/ODM Services

Full customization from technical parameters to product appearance and sample development.

Green Energy Solutions

Sustainable Solar Photovoltaic systems, including inverters and panels for carbon neutrality.

Global Export & Support

Certified 15+ year supplier offering flexible trade terms (EXW/FOB/DDP) and remote technical guidance.

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Professional Manufacturing

Automatic Voltage Converter Factory

With a production history since 2007, our facility in the Xiangyang Industrial Zone integrates advanced R&D with rigorous ISO9001:2008 standards. We ensure a 100% yield through multiple stages of technical debugging, delivering certified power solutions to over 20 countries worldwide.

Voltage Regulators

Engineered with high-sensitivity response technology to ensure a consistent, safe voltage output.

Power Transformers

uilt with premium copper/aluminum materials for superior heat dissipation and low energy loss.

Smart Solar Inverter

High-efficiency power conversion optimized for solar photovoltaic ecosystems.

Best voltage converter company

We supply a wide range of 110V-to-220V and 220V-to-110V converters.
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Popular power supply equipment

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Certifications & Quality Standards

Combining innovative technology with stringent quality standards to meet global demands.
TE16.06
CE CERTIFICATE JOHSUN
DT-1000VA-IC-0
EMC(1)-0
Blog & News

Latest News For our Products.

Detailed Explanation of Autotransformer Type Variac Transformer
A comprehensive variac transformer guide covering construction, brush mechanism, terminal wiring, comparison with dimmers and tap changers, selection criteria, maintenance, and safety rules.
Autotransformer Types Step-Up, Step-Down, Variac, 3-Phase & More
A complete classification guide covering autotransformer types by voltage function, control method, number of phases, core design, and application — with comparison tables, an 8-type summary chart, and a 5-step
How to Wire Autotransformer Circuits
A practical wiring guide covering step-up, step-down, variable, and three-phase autotransformer circuit configurations with terminal identification charts, common mistakes, and testing procedures.
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