Tungsten halogen lamps are classified into six categories according to their use: 1 lighting tungsten halogen lamps. It is divided into three types: high-voltage double-ended lamps, low-voltage single-ended lamps and multi-plane cold-reflecting low-voltage directional lighting, which are widely used in shops, shop windows, exhibition halls, and home interior lighting. 2 car halogen tungsten lamps. Also divided into headlights, low beam lights, turning lights, brake lights and so on. 3 infrared, ultraviolet radiation halogen tungsten lamp. Infrared radiation tungsten halogen lamps are used in heating equipment and copiers, and ultraviolet radiation tungsten halogen lamps have begun to be used in the curing process of dental curing powders. 4 photography tungsten halogen lamps. Ordinary tungsten incandescent lamps have been replaced in stage film and photojournal lighting. 5 instrument halogen tungsten lamp. Used in optical instruments such as modern microscopes, projectors, slides, and medical instruments. 6 cold reflection instrument halogen tungsten lamp. It is used in optical instruments such as portable film machines, slide projectors, medical and industrial endoscopes, dental coloring and curing, and color photo printing. The Light duty casters series ,wheel size include 2'',2.5'',3'',4'',5'' , wheel material include PVC casters , Gray rubber casters , Gray TPR casters and so on , main application furniture , little shelf , trolley carts ets .Material of Frame: Cold-Roller Steel Zinc Coating , the Anti-corrosion: NSS Netural Salt Spray Testing 12 H. Light duty PVC casters,Light duty Gray Rubber casters, Light duty TPR casters,PU Light duty casters Ningbo Mywin Caster Co., Ltd. , https://www.mywin-caster.com