About United Manufacturing Co., Ltd.

United Manufacturing Co., Ltd. experts in the design and production of rail wiring (Electrical Trucking System) and our products are controlled by engineers and manufactured by modern automatic machine, starting from CNC machinery processing, Shearing, Folding, welding and powder Paint coating or Hot Dip Galvanized. All of these production processes are quality controlled and certified by ISO 9001:2015 NEMA VE 1-2009 ASTM A123/A123M and ASTM B117

Products includes Cable Ladder Cable Tray Cable Wire way Pull box Junction Box Fitting Walkway and Accessories

Today, not only with the excellent working team who are expert in producing products based on customers’ requests, but also the modern machinery and quality control in every process, we are able to promptly produce the products according to customer’s orders and meet the standard requirements. Taking everything into account, the quality policy and our emphasis on the production and service makes us well accepted by the customers and societies.

Message From CEO

By way of our commitment to produce high quality goods and maintain sustainable development of the organization, we are well accepted and trusted by the customers and users of main switchboard control, panel board and electrical Trunking System. Our products are certified in terms of production process and quality management System. Therefore, our organization is in continuous development on all aspects including products, manufacturing technology and staff who are knowledgeable and specialized in manufacturing processes.

Dr.Montri Boonsith
Chief Executive Officer

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Quality Management System ISO 9001-2015 by INTERTEK
NEMA VE1-2009 Metal Cable tray Systems [Rated Load Capacity of Metal] Test by CHULALONGKORN UNIVERSITY
ASTM A123/A123M Standard Specification for Zinc[Hot-Dip Galvanized]Coatings on Iron and Steel Product [Designation: A123/A123M-02] Test by CHULALONGKORN UNIVERSITY
ASTM B117 Standard Practice for Operating Salt Spray[Fog]Apparatus[Designation: B117-11]Test by THAILAND INSTITUTE OF SCIENCE AND TECHNOLOGICAL RESEARCH [TISTR]Material Properties Analysis and Development Centre[MPAD]

Resolutions, Vision & Mission


Emphasize on being the leading company in electrical trunking business that provides high quality products, complies with international standards and develops the organization to maintain sustainable growth in our business.


The leading manufacturer in electrical Trunking business that provides high quality of products, meets international standards and supports ASEAN’s businesses.


We Produce Goods and Provide Services That Emphasize on Quality, Standards and Delivery for The Quality Assurance and Serve Customers’ Satisfaction.

Quality Policy

Quality process ensuring quality products

High Performance
Excellent product quality
DeliveryOn time
Any Time
Any Where
On-time delivery
ServiceCustomer Satisfaction
First Impression
Impressive service
International StandardAwareness
Meet international standard


United Group Consists of United Modular System Co., Ltd., United Manufacturing Co.,Ltd., United Tutors Co., Ltd., United Trading2010 Co., Ltd., Southern United Modular Co., Ltd. and United Law Co., Ltd.

United Modular System Co., Ltd. was established on May 3, 2010 with a registered capital of 5,000,000 baht under the management of Dr. Montri Boonsit and more experienced team. 20 years of expertise and expertise. Electrical Engineering and Manufacturing Engineering We manufacture and distribute electrical control cabinets including: Main Distribution Board, Emergency Distribution Board, Sub Distribution Board, Control Panel Board, Medium and Low Voltage Switchboard and Electrical Trunking including Wireway, Cable Tray, Cable Ladder, Fitting and Accessories.

United Modular System Co., Ltd. has developed the production system and management system. We focus on quality and product standards. It is a reliable and standard factory. On January 23, 2013, United Manufacturing Co., Ltd. was established. With a registered capital of 1,000,000 Baht, the Company will produce Electrical Trunking (Cable Wire way) , Tray, Cable Ladder, Fitting, Pullbox and Accessories)

In 2015, the Plant Will Expand and Increase Capacity. The Factory and headquarters moved to the location at 99/99 Moo2,Tombon Khomkret,Amphoe Samphran, Nakhon Pathom. It employs 170 people on an area of 9 rai, Increase an Electrical Trunking Capacity More Than 200 tons per month, So that separates production from United Modular System Co.,Ltd. But the LV Switchboard is manufactured by United Modular System Co., Ltd. and Electrical Trunking (Wireway, Cable Tray, Cable Ladder, Fitting and Accessories) are manufactured by United. Manufacturing Co., Ltd. All of Product Manufactured Under the “UMS” Brand.

Products Manufactured Under the “UMS” Brand are Manufactured Under the ISO Quality Management System, with a Focus on National and International Standards. Under that Vision “To be Leader in Manufacture of electrical trunking system with High Quality and International Standard Forward to AEC”

EstablishedMay 2010
Registered Capital5,000,000 Baht
Land Areas6,596 m2
Factory Areas2,000 m2
Total Employees170 Persons
CEODr.Montri Boonsith
Managing DirectorDr.Kajohnsak Sirimai
Product/ServiceElectrical Trunking System
Cable Ladder
Cable Trunking
Cable Tray
Wireway with Cover
Pull Box
Junction Box