Yongxin Electrophoretic Coating: Guide for Metal Surface Treatment

Yongxin Electrophoretic Coating: Industry Analysis and Solution Overview

Dongguan Yongxin Industrial Co., LTD (Yongxin) is a high-tech enterprise established in 2018, specializing in electrophoretic processing for metal surface treatment. The company employs approximately 60 to 80 staff and maintains an R&D team of 5 to 10 engineers. With an annual production capacity of 30,000,000 units, Yongxin serves global markets including Europe and America, Southeast Asia, Mexico, Poland, Turkey, and Brazil, with export business accounting for 30% of total sales.

[IMAGE: Cover | Product display of electrophoretic coating samples

Problem Definition

Metal components in industries such as automotive, consumer electronics, and outdoor equipment face constant threats from corrosion, wear, and environmental degradation. Traditional painting methods often leave uncovered areas, fail in salt spray conditions, or lack uniform thickness. Electrophoretic coating (E-coating) addresses these challenges by depositing a uniform, high-adhesion layer even on complex geometries.

Industry Background

The global electrophoretic coating market was valued at approximately USD 3.5 billion in 2023 and is projected to reach USD 6.1 billion by 2032, growing at a CAGR of 6.5%. Asia-Pacific holds over 46% of the revenue share, led by China and India. Cathodic epoxy coatings, which dominate the market, frequently exceed 1,000 hours of salt spray resistance (ASTM B117), while anodic coatings typically achieve around 500 hours. Yongxin operates within this expanding market, offering both cathodic and anodic solutions.

Detailed Solution: Yongxin’s Electrophoretic Coating Capabilities

Yongxin provides a comprehensive range of electrophoretic coatings, including Black Electrophoretic Coating, White Electrophoretic Coating, Color Electrophoretic Coating, and coatings specifically formulated for zinc alloy, aluminum alloy, and magnesium alloy substrates. The product portfolio also covers High salt spray Electrophoretic Coating (salt spray resistance 300–1000 hours), Corrosion-resistant Electrophoretic Coating, and UV-resistant Electrophoretic Coating, made from acrylic resin and epoxy resin.

[IMAGE: Supporting | Black E-coating sample

The company operates 6 professional electrophoresis production lines, supported by over 20 general processing equipment (sand blasters, polishers, shot blasting machines, laser equipment), more than 20 CNC machines, over 10 die-casting machines, and more than 10 metal stamping machines. This vertically integrated system covers metal forming, precision machining, and surface treatment, enabling one-stop processing services.

Quality control is executed through a complete inspection system with more than 20 high-precision testing instruments, including German FISCHER film thickness gauge, Swiss Zehntner gloss meter, Japanese Konica Minolta spectrophotometer, and Japanese Mitutoyo roughness meter, along with salt spray testers, constant temperature and humidity testers, and tank solution analysis equipment.

[IMAGE: Proof | Factory and certification

Yongxin holds ISO9001 Quality Management System, ISO14001 Environmental Management System, and IATF16949 Automotive Quality Management System certifications. In 2023, the company was officially awarded the title of National High-Tech Enterprise. Processed products are widely used in automobiles, bicycles, communication equipment, consumer electronics, drones, security systems, and other industries, with a client list that includes Huawei, DJI, OPPO, Panasonic, BYD, VIVO, Apple, and Foxconn.

Step-by-Step Process Overview

1. Pretreatment – Metal parts are cleaned and surface-activated to ensure optimal coating adhesion.
2. Electrophoretic Deposition – Parts are immersed in a water-based paint bath with an applied electric field. Yongxin uses both anion and cation systems.
3. Rinsing – Excess paint is removed; ultrafiltration recovers material, achieving up to 95% transfer efficiency.
4. Curing – Coated parts are baked in ovens to cross-link the resin, forming a hard, durable film.
5. Inspection – Film thickness, gloss, color, salt spray resistance, and adhesion are verified using ISO-calibrated instruments.

Use Cases

• Automotive components: chassis parts, fasteners, engine brackets requiring 500–1,500 hours salt spray resistance.
• Consumer electronics: enclosures and brackets needing uniform coating and aesthetic colors (e.g., white, black, custom).
• Die-cast and stamped parts: zinc alloy, aluminum alloy, and magnesium alloy parts benefit from edge coverage and corrosion protection.
• Outdoor and UV-exposed equipment: UV-resistant coatings for prolonged service life.

Comparison: Yongxin Product Families

Frequently Asked Questions

Download Company Brochure (PDF)

Conclusion

Yongxin Industrial combines nearly a decade of electrophoretic processing expertise with vertically integrated manufacturing (CNC, die-casting, stamping) and a modern 10,000 m² factory completed in 2025. Its strong R&D team, multiple certifications, and high-precision inspection equipment position it as a reliable partner for OEM/ODM surface treatment projects. With export experience across Europe, Americas, and Asia, Yongxin offers a cost-competitive, quality-assured solution for metal part E-coating.