Features: 1) lightweight 2) material waste is minimal 3) high precision works and more accurate detailing 4) fast and easy erection and installation 5) construction job is twice as fast as the conventional practice 6) economy in transportation and handling 7) high strength and stiffness 8) ease of prefabrication and mass production 9) substantial elimination of delays due to weather 10) termite-proof 11) does not bend easily 12) high degree of rigidity 13) non-shrinking and non-creeping at ambient temperatures 14) compatible with most building products timber, bricks, plasterboard 15) utility installations (wiring and plumbing) are hidden inside the walls