MARCH 27, 1974 :
TEO HONG SILOM CO.,LTD. From a small shop selling only general electrical
products on Silom Road, started importing new products from foreign
countries.
1984 : THAI TAKASAGO
CO.,LTD. Joined with TAKASAGO THERMAL ENGINEERING OF JAPAN
to design and install air conditioning and environment control systems
using in laboratories and surgical operation rooms which need to
be clean and free from the particles of dust.
1990 : TEO HONG ELECTRO-SYSTEMS
CO.,LTD. Joined with ELECTRO-SYSTEMS INDUSTRIES CORPORATION
OF PHILIPPINES,a leader in this industry, to provide state of art
engineering for the "Intelligent Building" management
and safety systems.
1991 : PROMPT TECHNO
SERVICE CO.,LTD. Another year later, TEO HONG SILOM continues
the progress when joining with COFRETH S.E. ASIA PTE LTD. providing
services in repairing and maintaining various kinds of building
internal system ; such as water-supply system, elevator and electrical
system.
1993 : OPEN SOFTWARE
ENGINEERING CO.,LTD. Established as a dynamic joint venture company
with NIPPON ELECTRONICS DEVELOPMENT CO.,LTD.(NED) OF JAPAN to provide
the latest technology and suitable network system.
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1998 : SS INTEGRATION
CO.,LTD. Aimed to begin as a revolutionary of professional
engineering contractor by abrupt response and flexibility for various
type of buildings and factories.