(1)High content, total Nitrogen is about 38%-40%, (2)It is neutral, without any poisonous material. It will do no harm to the stem of plant by continuous apply. (3)It will decompose slowly by the affect of microorganism. The decomposition process is almost similar to fish powder and bean powder does. So it can be the alternative for these high price products. (4)It will be clinged to the soil strongly and less moved away by water. It can be absorbed by plant easily. (5)With long-term effectiveness, it also will not produce any organic acid. So it is safe and harmless to the shoot-up and growth of plant. It is suitable for multi-fertilizer cultivation for the reason of low ion concentration. (6)Can be mixed with all fertilizer. Please avoid using with highly water absorption fertilizer. (7)What's more, with long-term effectiveness, it is very helpful to some long time growing plant as Turf, fruit trees, flowers. It can reduce the times of applying to save labor and fertilizer.