Comprehensive & Reliable Quality Assurance

TÜV-certified to ISO 9001, ISO 14001, and IATF 16949 standards, Sui On electrical insulation materials continuously improves manufacturing and processing capabilities.

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Professional Insulation Solutions for New Electric Vehicles

Sui On electrical insulation materials support 400V/800V oil- and water-cooling systems, improving motor heat dissipation and stability for safer, more reliable operation.

A Leading Insulation Material Company

Sui On Insulating is committed to delivering high-quality insulation products and services for a wide range of industries, supporting motors, generators, transformers, and electronic equipment.

Shortcuts

DRY TYPE TRANSFORMER

OIL IMMERSED TRANSFORMER

NEW ENERGY DRIVE SYSTEM

SMALL LOW-VOLTAGE MOTOR

INDUSTRIAL MOTORS

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One-Stop Insulation Wholesale Supplier for Every Application

From Nomex® aramid papers and Kapton® films to composite insulation papers — Sui On Insulating provides thermal and electrical insulation materials for motors, transformers, generators, and new energy drive systems.

Kapton®

Mylar® special film/Melinex®

Nomex® Aromatic polyamide insulation

Soflex®BT24452(F Grade DMD epoxy prepreg fabric)

Soflex®BT25800（H Grade GHG pre impregnated fabric)

Deep® Natural Ester Insulating Oil

Product specifications

HOKUETSU TOYO

Toray PPS polyphenylene sulfide film

RELATS Insulating Sleeve

DuPont Emperor Kaladex®

FORMEX

Soflex®TP&TK Composite kraft paper

Soflex®PET-PET( Composite polyester film )

Soflex®NSN Composite insulation paper

Soflex®NMN Insulation paper

Soflex®NKN

Soflex®NHN

Soflex®DMD Insulation paper

Our company

Sui On Insulating Materials Co., Ltd., established in 1986, is a national high-tech insulation material company. As a leading electrical insulation material supplier, we specialize in the R&D and production of high-performance insulation products and service for industrial applications. We are committed to providing premium products for motors, generators, and transformers. Today, Sui On Insulating serves hundreds of global enterprises.

Tianjin Shanghai QingDao Hong Kong/Shenzhen Thailand

MORE NEWS

Explore our news articles below and join us on this journey of growth and innovation.

04-29

Advanced Insulation Solutions for Industrial Motor Applications

04-20

New Energy Vehicles and Their Impact on Generator Insulation Innovation

04-18

Automotive Insulation Materials: Benefits and Limitations Explained

04-17

2026 Global Market Outlook for Vehicle Insulation Technologies

04-16

Understanding Transformer Insulation Paper: Essential Concepts for Engineers

04-15

Comparing Flexible and Rigid Electric Motor Insulation Materials: Applications Guide

04-14

Eco-Friendly Electric Motor Insulation: Bio-Based Materials Versus Synthetic Alternatives

04-13

Key Cost Factors from Transformer Insulation Material Suppliers

04-12

Enhancing EV Thermal Management with Automotive Insulation Materials

04-11

Polyester Melinex Film Price Analysis and Bulk Procurement Factors

Processing

Strictly implementing the ISO9001, ISO14001, and IATF16949 management system standards, we are committed to providing mature processed materials.

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Cold Stamping Forming

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Hot Forming Processing

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Ultrasonic Welding Processing

11-24

Cutting And Processing Services

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Composite&Glue Processing

Industry Sector

Powering Progress with a Complete Portfolio: From high-voltage generators and energy-efficient dry-type transformers to precision industrial motors and new energy drive systems, we deliver robust, innovative power and motion solutions that drive your productivity forward.