... dot matrix/rainbow hologram2) Color change, metallic thread, barcode3) Micro text, UV hidden text, watermark3) Combine more technology to ... 3D holograms, Dot-matrix hologram stickers, transparent hologram overlays and VOID hologram labels, also other various hologram stickers which ... different technologies such as barcode, air leakage empty, micro-text and so on.4. Our products are exported to Europe ...