Anti-Counterfeiting ThreadsThe anti-counterfeiting series fibres include Leuco-Fluorescent fibres, photochromic fibres and thermocolour fibres. They are heat-resistant(under 150℃) and water-resistant. Different specifications and colours are available for various kinds of anti-counterfeiting materials such as packaging, trademark etc..Types of Anti-Counterfeiting Threads:Leuco-Fluoescent fibres: The fibre appears a different colour in UV lamp irradiation.Thermocolour Fibres: The fibre appears a different colour when T 50℃.Photochromic Infrared Fibres: The fibre appears a different colour in infrared irradiation.Types of Specification:Long Thead: 30D-150DShort Thread: 210D-300D