According to the bill. Checks, drafts, invoices, passbook, par main security features such as design and into. Purple light, concave and convex identification. Laser identification. Magnetic identification. And double magnifying glass observation, USES the high quality of purple light, for money, checks and drafts. The invoice. Such as face paper fluorescence, fluorescence pattern. Fluorescent writing and teaching. Fluorescence fiber, fluorescent security line, etc. Fluorescence characteristics were identified. Gravure identification; USES the high quality special light source. For the money. Check.

Invoice and stealth design. Gravure printing, scraping printing, seal imprints and flat-fell seam grinding were identified. Bottom light identification: USES the high quality of purple light. For the money. Check. Draft (s). The invoice. Such as watermark resolution. The printed pattern. Line clarity. Paper texture, laser micro porous and splicing marks were identified.