... free,3 Its color varies as humidity changes.Use:Mainly for drying and indicating humidity of precision instruments, medicine, ... >Dark Green Size :1-3mm,2-4mm,3-5mm,4-8mm Packag: 25kg compound bag or 25kg drum, special ... help you to design and put into production.4.Quotation are offered for your unique sizes and some your special ... green or to white (1-3mm, 2-5mm, 4-6mm, etc) for power transformers