Perfect TMX TMT is Bhutan’s sole manufacturer of Thermex TMT reinforcement bars and one of the largest such manufacturers in the north-eastern part of the subcontinent. The company was established in 2014 as an integrated private sector company embodied of three experienced and technically sound pioneers, namely Lhaki Steels and Rolling Private Limited, Bhutan Rolling Mills Limited and Bhutan Steel Industries Limited (Druk Iron and Steel Limited).