Company Profile
Learn about Hong Kwang Electrodeposition Coating's history, vision and mission
Company Overview
Hong Kwang Electrodeposition Coating Co., Ltd. is a professional electrodeposition coating and surface treatment service provider, established in 1985 with over 40 years of professional experience. We specialize in metal electrodeposition coating technology, capable of processing various materials such as iron, zinc, and aluminum, providing high-quality surface treatment solutions for customers in automotive, electronics, industrial and other fields.
Currently, the group owns two professional electrodeposition coating companies: Hong Kwang Electrodeposition Coating Co., Ltd. and Hong Yu Chemical (Thailand) Co., Ltd., located in Bangkok and Chonburi Province, Thailand, providing comprehensive surface treatment solutions for customers.
Over the years, we have obtained various international certifications including ISO 9001, ISO 14001, and ISO/TS 16949, proving our excellence in quality management, environmental protection, and automotive industry standards.

Business Philosophy
Integrity Principle • Continuous Innovation
We adhere to integrity as our foundation, establishing long-term trusting relationships with customers. Meanwhile, we continuously pursue technological innovation, improving production processes and product quality.
Quality First • Reasonable Price
We always prioritize product quality, ensuring that every product meets our customers' high standards. At the same time, we offer reasonable and transparent pricing, creating maximum value for our customers.
Precise Delivery
We strictly adhere to agreed delivery deadlines with customers, ensuring on-time delivery through efficient production and logistics systems, allowing our customers' production lines to operate seamlessly.
Company History
Hong Kwang Electrodeposition Coating Co., Ltd. established in Taiwan
Product testing laboratory established
Environmental wastewater treatment facilities established
Hong Yu Co., Ltd. established in Taiwan
Hong Kwang Electrodeposition Coating Co., Ltd. and Hong Yu Co., Ltd. merged into "Hong Kwang Electrodeposition Coating Co., Ltd." with Changhua Plant and Huatan Plant
Hong Kwang Thailand plant established
Hong Yu Thailand plant established
Company Vision
Hong Kwang's vision has always been based on the principle of integrity. We strive for excellence in technology and quality, moving towards diversified development. Over the years, we have obtained ISO 9001 International Quality System Management Certification and ISO/TS 16949 Global Automotive Quality System Management Certification, proving our ability to consistently meet customer needs with our professional laboratory and advanced equipment.
Additionally, Hong Yu obtained ISO 9001, ISO/TS 16949, and ISO 14001 Environmental Management System certifications in less than a year, demonstrating our ability to reduce pollutant generation and emissions, promote waste gas, waste material, and wastewater recycling, and conserve energy and raw materials.
In the future, we will continue to uphold our integrity-based management philosophy and provide better service to customers with first-class equipment. At the same time, we will build a green production environment through our modest company culture, becoming a benchmark for ecological enterprises.
Group Companies
We have two factories in Thailand providing comprehensive electrodeposition coating services
Hong Kwang Electrodeposition Coating Co., Ltd.
HONG KWANG ELECTRODEPOSITION COATING CO., LTD
Hong Kwang Electrodeposition Coating was established in 2004 and is located in the Bangpoo Industrial Estate near Bangkok. It focuses on high-quality electrodeposition coating and surface treatment services, equipped with advanced production facilities and rich technical experience.
Contact Information
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370/1 Moo 4 Bangpoo Industrial Estate
Rd. T. Phreaksa, A. Mueang, Samut
Prakan, TH10280 -
370/1 หมู่ 4 นิคมอุตสาหกรรมบางปู
อ.เมืองสมุทรปราการ
จ. สมุทรปราการ 10280 - (+66) 2-709-3757 to 8
- (+66) 2-709-3752
- sales@hkedp.com
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Hong Yu Chemical (Thailand) Co., Ltd.
HONG YU CHEMICAL (THAILAND) CO., LTD
Hong Yu Chemical was established in 2013 and is located in Chonburi Province in the eastern region. As the group's second production base, it expanded the service area and obtained multiple international certifications to ensure high quality and environmental standards for products.
Contact Information
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168 Moo.1 T. Nongeloon, A. Banbueng,
Chonburi, TH20220 -
168 หมู่ 1 ต.หนองอิรุณ อ.บ้านบึง
จ. ชลบุรี 20220 - (+66) 38-110-029
- (+66) 38-110-040
- hysales@hkedp.com