We, the Siam Industrial Wire Co., Ltd. (SIW), are the biggest maufacturer of Pre-stressed concrete wire, Pre-stressed concrete 7-wire strand, Cold-drawn steel wire and Wire Mesh.Our quality products have been exported to almost 30 countries worldwide.Our company have been accredited by international accreditations and institutes such as ISO 9001:2000, ISO/IEC 17025, ISO 14001, OHSAS 18001, NATA (National Association of Testing Authorities, Australia), JIS G3536 (Japanese Industrial Standard), QDMR (Queensland Department of Main Roads; Australia and etc.With our annual capacity of 60,000 Mts. for Pre-stressed concrete 7-wire strand, we can assure you of our capability to supply throughout any project completely. Vattanan KhambuoThe Siam Industrial Wire Co.,ltd555 Rasa Tower 14th Floor Phaholyothin Road,Chatuchak Bangkok 10900Tel :662-9370060-67 Ext:2004 Fax :662-9370068-69Mobile :661-842-4948 xxxxx