GKM Manise of PT Tiga Pilar Sejahtera and GKM Lightning of PT Jatisari Srirejeki has demonstrated its ability in the competition: Intersection Quality of Work and Productivity Council (TKMPN) XIX International Quality & Productivity Convention (IQPC) organized by the Forum for Quality Control on November 23rd – 26th, 2015 through its success in winning the GOLD rank. The event was attended by 1396 participants, 251 clusters, and 119 national private companies, state-owned enterprises, and enterprises.
On November, 23rd – 24th 2015 also held the Convention on Quality Control in Central Java Provincial where GKM Ships from PT Tiga Pilar Sejahtera wins a GOLD in this event.