12Pcs Quick Dry Ink Coding Machine Black Waterproof FastDrying Without Fading Hardware Tools Item Type: Quick drying ink Product Specifications: 46ml/bottle, 12 bottles/box Ink Color: Black Applicable To: Metal products, glass, plastic products, paper products, wood products, cartons, packaging plastic bags, etc. Under normal temperature conditions, it dries in about 3 seconds after printing and does not fade. The ink does not have a specific concept of how many times it can be used. After adding ink, the more one-time printing, the more ink will be saved. Generally, the next bottle can be printed at least a thousand times. When adding ink, you don't need to add too much, just apply it evenly on the ink pad. It depends on everyone usage. Most materials can be used, such as paper products, wood products, plastic coated paper boxes, plastic packaging bags, beverage cans, metal products, glass products. The product need to be wiped dry and then printed. It will not be easily wiped off after printing, unless it is wiped off with a cleaning agent or a hard object. Can be put in the refrigerator, it' s waterproof.