Name:Laundry Tag 2.Water-proof, resist high temperature, and extreme chemical in laundry application 3.Diameter: 16, 20, ... 22mm Name:Laundry Tag Water-proof, resist high temperature, and extreme chemical in laundry applications Diameter: 16, 20, 22 ... engrave serial numberApplications for the coin tag: Laundry application Process control and factory automation Laundry Tag