Sg Long Industries was incorporated on 31 May 1990 with the objective of privatising the JKR Quarry at Sg Long Selangor. The company with 20% participation of Selangor State Government took over the management of Sg Long Quarry from JKR on 16 December 1990.
It operates on 640 acre of a rock hill with an abundance of high quality granite reserve, to produce and supply various types of Granite Stone Aggregates ranging from Blocks to Quarry Dust with a production capacity of 150,000 metric tones per month.
Other core activities of the company include production and supply of Bituminous Mixes for the road and building construction, especially in the Klang Valley and the state of Selangor, Malaysia.
Another two major subsidiaries in this division are Sg Long Bricks Sdn Bhd. and Easy Mix Sdn Bhd., both of which are involved in the manufacturing of construction related materials; i.e. unbaked clay bricks and ready mixed concrete respectively.