Piping Equipment Unit Equipment Name Vendor Country Pipe , Fitting , Flange NAS TOA Japan/Thailand Nippon Kokan K.K. Japan Canadoil Asia Thailand Fukusuke Kiko Co.,Ltd. Japan HANSB2B.COM.Co.,Ltd. Korea SeAH Steel Corp. Korea Thai Mui and Associates Co.,Ltd. Thailand Trouvay & Cauvin France Van Leeuwen Pipe & Tube Singapore Special Piping, Lined, Other Resistoflex USA 3P France Asian Chemicals & Engineering Thailand Charoen Wattana Engineering Thailand Enco Engineering Thailand