Galvanized
Standard
Thai Industrial Standards License
Thai Industrial Standards License
GI
TIS. 50 License: Bangkok Steel Industry Public Co., Ltd.
TIS. 50 License: Rachasima Steel Products Co., Ltd.
GL
TIS. 2228 License: Rachasima Steel Products Co., Ltd.
PPGI
TIS. 2131 License: Bangkok Steel Industry Public Co., Ltd.
TIS. 2132 License: Bangkok Steel Industry Public Co., Ltd.