CV Putra Tunggal Gunawan berdomisili di Tanah Grogot, Jl. RA. Kartini, No 66, Kec. Tanah Grogot, 76211 Kab. Paser, Kalimantan Timur. CV. PTG saat ini bergerak di bidang tambang batubara ( concession of mining coal) , Supplier Steam coal from East Borneo, Quality Control ( QC) , Cangkang Kelapa Sawit ( Palm Oil Karnel Shell-POKS) from East Borneo. " Time is free, but it' s priceless. You can' t own it, but you can use it. You can' t keep it , but you can spend it. Once you' ve lost it, you can never get it back."