... 1,Now Hot Melt Glue have two main material, you can choose granule or block shape: EVA plastic material, High quality, high temperature performance ... , high quality, good cold tolerance2,Guarantee: 1 year, advise use it in half year.3,Attention:(1)Working next to the hot melt ... )Keeping the device clean, can help the temperature's exactness. Hot Melt Glue With High Quality