About Us

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Company History

Four Systems Co.,Ltd. has a rich 25-plus-year history, which began on November 9, 1989, when founder Mrs.Sunanta Vasuwanich, also known as major shareholder and Managing Director, started a wholesale business in computer equipment. Under the product development, Four Systems has worked with Delta Electronics (Thailand) Public Company Ltd. to build a “SOCOS” monitor, and also became the authorized dealer on many leading brands such as SAMSUNG, Delta, HP, Acer, Socomec, and Biostar. In order to extend the potential, Four Systems has expanded the business to communication products, Large Display products, and established a System Integrated Solution section to serve customer needs in year 2007.

Presently, Four Systems has 100-million Baht in registered capital with 120 employees, and is committed to deliver exceptional service and value.

Company Information


Company Four Systems Company Limited
Capital 100 Million Bath

November 9,1989

Employee 120 Persons
Managing Director Mrs.Sunanta Vasuwanich
Address  608-608/7 Ramintra Rd.,Kannayaw Bangkok 10230

- Import-Export and Distributor: IT

- Communication  and  Display product

- Display Solution 

- System Integration


Tel. 662-791-2100 Fax. 662-948-6090-2




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Company Dignity


1993 Worked with Delta Electronics (Thailand) Public Company, located in Export Processing Zone (EPZ), to develop “SOCOS” monitor to have the biggest market share in Thailand. 2002 - Top sale in Hard Disk and OMS on SAMSUNG brand.
2002 Top sale in Hard Disk and OMS on SAMSUNG brand.
Qualified for ISO 9001:2000 UKAS Quality Management Cert and NAC Thailand.


2007 Invested and worked with Chinese factory to build a wholesale business in Plastic Calling Card/Prepaid Card/ID or Member Card, and others to serve Thai market.
2008 Leading in LED FULL COLOR DISPLAY business.
2013 Involving with Agricultural Census 2013 project by National Statistic Office of Ministry of Information and Communication Technology, using 20,000 “Sonore” Tablets. It was the first time to conduct the survey with Tablets in Thailand.

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