About Us
Vietnam is entering a new era of growth and transformation, while rapid advances in science and technology are reshaping industries around the world. We believe that sustainable development can only be achieved when economic growth and environmental stewardship progress together.
For more than 20 years, GOSHU KOHSAN (VIETNAM) has been committed to providing practical and innovative water treatment solutions to support our customers’ sustainable growth. By continuously improving our expertise and introducing advanced technologies, we strive to help businesses use resources more efficiently, reduce environmental impact, and create long-term value.
Together with our customers and partners, we will continue contributing to a greener environment and a more sustainable future, supporting Vietnam’s journey toward becoming a modern and prosperous nation.
Mr. Nguyen Van Huy
Vision
We contribute economic growth as well as social responsibilities while using resources wisely and minimizing waste.
Mission
Be real No.1 and the most reliable Vietnamese Company in water treatment sector, by providing the best solution for customer satisfaction.
Over 30 Years of Experience in Vietnam
GOSHU KOHSAN (VIETNAM) CO., LTD. began implementing EPC projects in water and environmental engineering in Vietnam in 1995 and officially established its legal entity in 2004. Since then, we have supported the development of Vietnam’s industrial sector for more than 30 years and successfully completed over 600 projects nationwide through our offices in Hanoi, Ho Chi Minh City, and Da Nang.
Comprehensive Water and Environmental Solutions
GOSHU KOHSAN (VIETNAM) provides comprehensive services covering consulting, research and development, laboratory testing, engineering design, construction, installation, operation, and maintenance of water treatment systems.
Our specialists, engineers, and project managers have received professional training in Japan, Europe, and other advanced Asian countries. Drawing on this expertise, we continuously introduce and apply advanced technologies in water treatment, ultrapure water treatment, industrial wastewater treatment, and water recycling and reuse.
As a result, we can serve a wide range of industries, including automotive, electronics, textile and dyeing, mining, food and beverage, and other manufacturing sectors.
Solutions for Complex Environmental Challenges
Over the years, we have built extensive experience in solving complex environmental challenges, from highly contaminated water sources to the stringent water quality requirements of high-tech manufacturing.
More importantly, we develop each solution according to the specific conditions and technical requirements of every project. Our engineering team works closely with customers to identify practical and effective solutions, even for highly specialized or technically demanding applications.
Water Treatment Chemicals and Technical Support
In addition to EPC services, we supply a wide range of water treatment chemicals, boiler treatment chemicals, cooling tower chemicals, and RO membrane protection chemicals in compliance with Vietnamese chemical regulations.
Furthermore, our technical sales engineers work directly with customers to evaluate water quality, select suitable products, and optimize chemical dosing programs. This approach helps maximize treatment performance while reducing chemical consumption and operating costs.
Laboratory, Operation and Maintenance Capabilities
Our modern laboratory can analyze most water quality parameters required by Vietnam’s National Technical Regulations. At the same time, our experienced operation and maintenance teams provide technical support throughout the operating life of each system.
By combining engineering expertise, laboratory capabilities, field experience, and the technical strength of the Goshu Kohsan Group, GOSHU KOHSAN (VIETNAM) delivers reliable, practical, and sustainable solutions for industrial customers.
Ultimately, we aim to remain a trusted partner to our customers while supporting industrial development through efficient resource utilization, environmental protection, and the advancement of a greener and more sustainable Vietnam.
| Corporate name | Goshu Kohsan (Vietnam) Co.,Ltd. |
| Hanoi Head Office | Plot P1, Thang Long Industrial Park, Thien Loc Commune, Hanoi, Vietnam |
| Ho Chi Minh Branch Office | No. 40 VSIP, Street No. 3, Vietnam – Singapore Industrial Park, Thuan Giao Ward, Ho Chi Minh City, Vietnam |
| Da Nang Branch Office | No. 98 Quang Trung, Hai Chau Ward, Da Nang City, Vietnam |
| Date of Establishment | December 16, 2004 |
| Investment Capital | USD 3,163,000 (As 2023) |
| Founder | Mr. Ariruth Isariyakunakorn (Akio Nakamoto) |
| General Director | Mr. Nguyen Van Huy |
Quality Management System
ISO 9001:2015
QUALITY MANAGEMENT SYSTEM
Details of certification
GOSHU KOHSAN (VIETNAM) CO., LTD is certified to ISO 9001:2015 – the internationally recognized standard for quality management systems. This certification applies to the design, execution, maintenance of water treatment systems and wastewater treatment systems; providing equipment and spare parts for water treatment systems and wastewater treatment systems; providing chemicals, RO membrane cleaning, ion exchange resin regeneration; and operation of wastewater treatment systems.
Certifying organization
ANAB
Auditing organization
BSI Vietnam
Certificate number
FS 662337
Certificate of Eligibility for Construction Activities
HAN-00043527
Construction Capacity Certificate
Details of certification
GOSHU KOHSAN (VIETNAM) CO., LTD has been granted Construction Operation Capacity Certificate No. HAN-00043527 by the Hanoi Department of Construction, covering technical infrastructure works for water supply and drainage, including planning, design/appraisal, construction, and supervision. The certificate is valid until 22 July 2030.
Certifying organization
Hanoi Department of Construction
Certificate number
HAN-00043527
Laboratory Accreditation
ISO/IEC 17025:2017
LABORATORY ACCREDITATION
Details of certification
The Laboratory of GOSHU KOHSAN (VIETNAM) CO., LTD has been accredited to ISO/IEC 17025:2017 for laboratory competence in the fields of Chemical and Biological testing. The accreditation confirms that the laboratory meets the required standard for testing and calibration competence.
Certifying organization
Bureau of Accreditation (BoA), Ministry of Science and Technology
Accreditation number
VILAS 361
Validity
25 July 2024 – 24 July 2029
