PT. Sentosa Laju Sejahtera (SLS) is an Indonesian mining and general contractor specializing in mineral, coal, and quarry mining. PT. SLS is a subsidiary of PT. Sentosa Laju Energy, a coal trading company with a trading volume of more than 8 million metric tons per year.

Conducting Joint Operation Nickel Mine in North Konawe with Bosowa Group with an area of 201ha, nickel ore reserves of 5,000,000 tonnes with grade. The average NI is 1.8%, the form of joint operation is fee based.