Lanka Aluminium Industries PLC is engaged in the manufacture and sale of aluminum extrusions. The Company's business segments include Extrusions, Imported Extrusions, Investment Property, Tea, Fabrication and Eliminations. It manufactures a range of aluminum extrusions for architectural, hardware and other specialized applications. It offers a range of products, such as arch window, swing door, multi folding door, sliding window, casement window, com door, sliding door, partition and shop front. Its other products and services include Sealex SX-1000, Sealex SX-5000, Sealex SX 4000 and Sealex SX-2000. The Company's subsidiaries include Comark Lanka (Pvt) Ltd, Castalloys (Pvt) Ltd. and Comark Engineers (Pvt) Ltd. Through Comark Lanka (Pvt) Ltd, it is involved in trading in aluminum extrusions and accessories. Through Castalloys (Pvt) Ltd., it is involved in investment trading. Through Comark Engineers (Pvt) Ltd., it is involved in undertaking contracts for aluminum fabrication.