Company Profile

Intertech Specialty Glass Co., Ltd. (ISG) was founded in 1996 with an objective of establishing a glass-manufacturing company.

ISG initially began manufacturing only tempered glass and heat-strengthened glass. Our main concentration is to produce the best quality safety glass; hence, the tempered glass machine from Tamglass Ltd. in Finland, which is regarded as the world’s best tempered glass machine, was chosen. We have signed a contract with Tamglass Ltd. to maintain machine condition in the ultimate quality twice a year. Through our intention to produce the first-class quality products, our tempered glass has been received industrial standards —TIS 965-2537 and TIS 965-2560 — from the Thai Industrial Standards Institute.

With years of strengthening experience, our ambition to deliver quality products has never been changed. We accordingly purchased a furnace from Tamglass Ltd. in Finland in 2010, although the cost is significantly different when compared with many brands. This high efficiency machine serves a large-scale production, which can produce tempered glass and heat-strengthened glass up to 2800 x 6000 millimeters.

For laminated glass, a machine from Lisec C.M.I., Italy, has been thoroughly selected for three main reasons:
1) the company is well-known for producing high quality manufacturing glass machines;
2) this particular machine has the best automatic system; and
3) it can produce up to 2,800 x 6,000 millimeters.

Quality of film is another component that we never neglect. Amongst numerous selections of glass laminating films, we use films from only the best two laminating film manufacturers in the world, Dupont; USA and Solutia Inc.; USA. Besides, the Thai Industrial Standards Institute has also given industrial standards — TIS 1222-2537 and TIS 1222-2560 — to our laminated glass products. Our customers can then be confident in our superior product quality.

Expansion continued in 2015 when we invested in an insulated glass machine from Bystronic Lenhardt GMBH, Germany, the best insulated glass machines producer. This machine can produce up to 2,700 x 5,000 millimeters and can automatically add inert gas while working.

Our Partners

With our policy on product and service quality, our ISG products are trusted by a wide range of customers

Department Store / Exhibition Center

Siam Paragon
Central Department Store
The Mall Group
Mega Bangna
Fashion Island
Tesco Lotus
Bitec Exhibition Centre
IMPACT Arena, Muang Thong Thani


Peninsula Hotel
Grand Millennium Hotel
State Tower Hotel
Landmark Hotel
Meridien Hotel
Novotel Hotel
Movenpick Hotel


Bangkok International Hospital
Bumrungrad International Hospital
Siriraj Hospital
Rutnin Eye Hospital
Samitivej Hospital
Phyathai Hospital
Bangkhuntian Geriathric Hospital
Ubonratchathani Cancer Hospital


Porsche Showroom
Jaguar Showroom
Honda Showroom
Toyota Showroom
Mazda Showroom
MG Showroom

Residential Project

Land and House
The Cube
Regent Home
Grand Unity
The Parkland



Siam Commercial Bank
Bangkok Bank
Kasikorn Bank
Bank of Ayudhya
Thanachart Bank
UOB Bank


Government Sector

Suvarnabhumi Airport
Office of the Permanent Secretary, Ministry of Defence
Bangkok Art and Culture center
Buriram City Hall
King Mongkut’s Institute of Technology Ladkrabang