B- Nine(N-Dimethylamino Succinamic Acid) is a growth regulator,which controls the excessive growth of the dicotyledon.It can be used as followinngs:

The first,shorts and erects the plants vines;
The second,prolongs the life of flowers,enhances the colors,and make them more beautiful;
The third,raises the outpute of potato,peanut,and other plants;
The forth,keeps the cut-flower fresh

It is very popular in market and has good reputations.