product

  • UV Fluorescent security pigment

    UV Fluorescent security pigment are excited by UV light and emit visible light. Topwell’s fluorescent products have an easy to implement fluorescent effect with excellent emission intensity, displaying colors from ice blue to deep red.   Our company offers a wide range of colors as below: Red, y...
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  • Thermochromic ink

    Thermochromic ink is a viscose-like mixture composed of thermochromic powder, connecting material and auxiliary materials (also known as auxiliary agents) in a certain proportion. Its function is to form on paper, cloth, plastic or other substrates. A pattern or text that changes color. In the co...
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  • NIR 980 and NIR 1070

    The term near-infrared (NIR) dye has found many application in our daily life. The emission wavelengths of near-infrared (NIR) dyes range from 700 nm to 1200 nm. Due to their promising application prospect, near-infrared (NIR) dyes are widely concerned and studied. Our NIR Dyes are incorporated i...
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  • Perylene Pigment for coating and paints

    Pigments are important constituents in paints, coatings and inks. They are added to paints and coatings formulations to impart color, bulk or a desired physical and chemical property to the wet or dry film. Are you searching for the right pigment for your formulation? Explore here, the detailed k...
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  • Pigment Red 179

    Pigment Red 179 is suitable for automotive coating and refinish, polyvinyl chloride plastics and fibers. Pigment Red 179 is one of the pigments with highest business value. For the automotive coating and refinish, it can be used together with other organic/inorganic pigment to extend the hue to y...
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  • Photoinitiator

    photoinitiator Photoinitiator, also known as photosensitizer or photocuring agent, is a kind of synthetic agent that can absorb the energy of certain wavelength in the ultraviolet region (250 ~ 420nm) or the visible region (400 ~ 800nm) and produce free radicals and cations. To initiate monomer p...
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  • BLACK LIGHT AND UV PIGMENTS

    BLACK LIGHT APPLICATION AND UV PIGMENT COUNTERFEITING & FRAUD USING BLACK LIGHT One of the most common uses for black lights today are for the detection of counterfeit currency and credit cards. Black lights of some kind should be used by anyone that handles currency. HAND STAMPING USING BLAC...
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  • UV 312 for gel coating, polyester, PVC etc

    UV 312 is first developed by BASF. It is Ethanediamide, N-(2-ethoxyphenyl)-N’-(2-ethylphenyl) grade. It acts as a UV absorber belonging to oxanilide class. UV-312 could imparts outstanding light stability to plastics and other organic substrates. It has strong UV absorption. For many substr...
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  • Laser protective glasses 980nm 1070nm

    Laser protective glasses are used to reduce the potentially harmful laser intensity to the safety permitted range. They can provide optical density index for different laser wavelengths to attenuate the light intensity, and at the same time allow enough visible light to pass through, so as to fa...
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  • UV fluorescent security pigment Red UV pigment For Security ink

    UV fluorescent security pigment can be activated by UV‑A, UV‑B or UV‑C region and emit bright visible light. These pigments have an easy to implement fluorescent effect and could show colors from ice blue to deep red. UV fluorescent security pigment is also called invisible security pigment, as t...
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  • “Infrared excitation pigment” and “Near-infrared absorbing dye”

    Infrared excitation pigment: The pigment itself has no color, and the surface is colorless after   printing. It emits visible light (colorless-red, yellow, blue, green) after being excited by 980nm   infrared light.     Near-infrared absorbing dye: Th...
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  • Invisible UV fluorescent Pigment/Black light Activated UV pigment

    The UV fluorescent pigment reacts under ultraviolet rays. UV fluorescent powder has many applications, the main applications being in anti-counterfeiting inks. For use in anti counterfeit purpose, long wave security technology is widely use for bill, currency anti counterfeit.In market place or b...
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