Industrial Aluminium Profile, Aluminium Extrusion, T Bolt manufacturer / supplier in China, offering Fractional Inch Aluminum Extrusion BS1575A 1.50'' X 0.75'' Smooth Surface T-Slotted Profile, BS3030b 3.00" X 3.00" Lite Smooth T-Slotted Profile - Eight Open T-Slots, China Fractional Extrusion BS1545A 1.5" X 4.5" Smooth Surface T-Slotted Profile - Eight Open T-Slots and so on.