KT-30 is developed by the Unite States, allow to be used in USA, European Union and Japan, it is also a kind of plant growth regulator permitted to apply to watermelon, grape, kiwifruit and other fruits by China's Ministry of Agriculture. It is the most activated synthetic cytokinin at present, The bioavailability of KT-30 is 10-100 times of that of 6BA. It can promote cell division and expansion, Induce bud development, prevent flowers and fruits dropping. KT-30 is a high efficient plant growth accelerator, it can accelerate growth of seedings, enlarge fruit, promote germination of dormant buds to increase yield.