Bo security watermark ink security ink white watermark watermark ink black ink security

Security ink - Watermark ink, white watermark ink, watermark ink black, white watermark offset printing ink, high penetration watermark ink, watermark ink on paper (13688855904): The watermark watermark ink and paper have the same effect, welcome light observation can be seen clearly watermark pattern. Due to low cost, the watermark can identify no special equipment, it is now widely used in printing documents and instructions. Color varieties: white watermark offset printing, screen printing black and white watermark watermark. Applications: printing documents and instructions. Printing: white Watermark: silkscreen and offset printing; black watermark: screen printing.