Siam Yamato Steel Co., Ltd. Head Office : 1 Siam Cement Road, Bangsue, Bangkok 10800, Thailand Tel : 66 2586-2472-3, 5862371-2 Fax : 66 2586-5224 E-mail : sys@syssteel.com   E-Ordering System   User :     Password :             If you don't have user id please contact admin.  MONTHLY REPORT  DAILY REPORT  DEMAND INDICATOR E-ORDERING Powered by 11-INFOTECH SYSTEM Co., Ltd. Copyright © 2019 Siam Yamato Steel Co., Ltd. Version 3.1.0 - 02/2019 All Rights Reserved.