... agent is mainly composed of urea, calcium nitrate and magnesium nitrate, which is the composite of ammonia fertilizer, can melt snow and ... of the road, while it melts the snow.6. Our urea snowmelt agent is the lowest corrosion minimum and the most ... in the trail, garden, forest park roads.Specifications: powder or granular.Packing: waterproof packing, 25kg / bag or customized packaging according to ...