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Hot-rolled structural sections to support the growing of the construction industry As the pioneer in producing hot-rolled structural sections to support the growing of the construction industry in Thailand and to replace imported products, SYS is proud to be part in building the economic stability of the country. It has been more than a decade that SYS has grown and developed into the largest hot-rolled structural steel producer in Thailand with a vision to be a leader in the ASEAN region. SYS was established in 1992 as a joint venture between Yamato Kogyo Co., Ltd., Mitsui & Co. (Thailand) Ltd.,Sumitomo Corporation (Thailand) Co.,Ltd. and the Siam Cement Co., Ltd with a capital investment of more than 6,500 million baht. Using state of the art technology, SYS can prod…