hot melt adhesive 1)Agingproof,Innocuity 2)Quick Solidification 3)High Efficiency 4)Non-impregnant,non-pollution. DW HOT MELT BLOCKhot melt adhesive ,block shapeMelt viscosity:8400±1700Softening point:80±5Using for filter,wooden products,crafts and arts,etc. HOT MELT BOLCK