We, the Siam Industrial Wire Co., Ltd. (SIW) , are the manufacturer 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 ...
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