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Guangzhou Katoy Electronics Co., Ltd. is a professional custom transformer and magnetic component manufacturer based in Panyu, Guangzhou, China. We specialize in the design, development and production of a full range of magnetic products including audio transformers, low-frequency transformers, high-frequency transformers, toroidal transformers, inductors, reactors, single-phase & three-phase transformers and instrument transformers.<br/>With an in-house R&D engineering team and automated production facilities, we provide one-stop solutions from prototype development to mass production for global clients. Our products are widely applied in industrial power supplies, new energy systems, audio equipment, industrial control, instrumentation and telecommunications industries. Adhering to strict quality control standards and full inspection procedures, we serve customers across Europe, the Middle East, Southeast Asia and the Americas with reliable products, competitive pricing and responsive technical support.
020-32031188
Guangzhou KATOY Electronics Co., Ltd.
Latest News & Industry Insights on Transformers and Magnetic Components

KATOY News

01

2026-06

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KATOY Showcases Audio Transformers at Prolight + Sound Guangzhou 2026

Guangzhou KATOY Electronics participated in Prolight + Sound Guangzhou 2026, showcasing transformers, inductors and magnetic components for professional audio, power amplifiers and related power-supply applications.

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27

2025-08

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Custom Transformers and Magnetic Components for Energy Storage Systems | KATOY

KATOY provides custom transformers, inductors, reactors and magnetic components for energy storage power electronics, supporting power conversion, filtering and industrial OEM applications.

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22

2025-07

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KATOY Showcases Welding Machine Transformers at BEW 2025

KATOY exhibited welding machine transformers and inductors at the 28th Beijing Essen Welding & Cutting Fair, meeting customers from the global welding industry and discussing custom magnetic component solutions for inverter welding equipment.

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20

2025-03

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China Low-Frequency Electronic Transformer Market: Applications, Trends and Customization Opportunities

China’s low-frequency electronic transformer market is supported by the country’s large electronics, electrical machinery and industrial equipment sectors. This article reviews official 2025 industry data, export trends, key applications and opportunities for custom transformer manufacturers.

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Start Your Custom Magnetic Components Project
From product design and prototype development to volume production,
KATOY provides engineering support and manufacturing services for custom magnetic components.
Custom Design
Fast Response with OEM/ODM Support
Global Service
Supporting Customers Worldwide with Long-Term Partnerships
Reliable Quality
Strict Quality Control for Consistent Performance
Advanced Manufacturing
Automated Production with Lean Manufacturing
Copyright © 2024 Guangzhou KATOY Electronics Co., Ltd. All Rights Reserved.
Katoy Electronics – Custom transformer and magnetic component manufacturer in Guangzhou, China. Reliable quality, custom solutions and global export support.Power inductor and common mode choke for EMI filtering,Line reactor for VFD drives and renewable energy systems
Email: daniel@gzkatoy.com
Tel: +86 20 3203 1188
Address: No. 28-1, Gongye 1st Road, Tanshan Village, Hualong Town, Panyu District, Guangzhou, China
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