Ink is suitable for non-porous material (glass bottles and containers, labels, plastic bottles and containers, rubber parts, tins and cans, metal components, flexible plastic films, electronic components, shrink wraps,  PVC piping, epoxy laminate and PCB boards, molded plastics, PPE, sanitizers and masks and more) as well as for porous-material (cardboard and recycle papery, woods,corrugated boxes, fabric masks). Yellow and white ink is suitable only for non-porous material. We recommend to send us sample of material to test the best option of ink for your needs.