Permanent UV marker,ideal for anti-counterfeiting,

It canwrite invisible messageson almost allkinds of drysurface,eg:Glass,Paint,Wood,Plastic,Metal, Skin of people and etc.! The massage written with it is colorless,butmagically illuminate special high-brightness when exposed to ultraviolet light. You can continue to write these sappy love letters without the fear of someone else reading them. Signature security !Price marking !Admission control and pass-out marking !Identification of merchandise !Anti-counterfeiting!Safe and easy!Not easily found in and does not affect the appearanceWaterproof ! Non-toxic !Heatproof andEnvn-friendly! Other uv light pen for choose: MINI CH0816 MINI CH0813 MINI-0813B CH0811 CH0812 OEM CH0816 CH0813