S-abscisic Acid is widely present in plants and together with gibberellins, auxins, cytokinins and ethylene, constitutes the five major plant endogenous hormones. It is used in crops such as rice, vegetables, flowers, lawns, cotton, Chinese herbal medicines, and fruit trees to improve the growth potential, fruit set rate, and quality of crops in adverse growth environments such as low temperature, drought, spring cold, salinity, pests and diseases, thereby increasing yields and reducing the use of chemical pesticides.

The mechanism of action of maleic hydrazide is to inhibit the cell division of meristems in active growth areas. It can inhibit apical dominance, inhibit vigorous growth at the top, and transport photosynthetic products downward; entering the axillary buds, lateral buds or buds of tubers and roots, it can control the germination of these buds or extend the germination period of these buds.

Fruitone-CPA is a plant growth regulator with a relatively specific application. It can improve product quality at low doses and inhibit crown growth at high doses. It is mainly used to inhibit the growth of pineapple crown buds and leaves, increase fruit size, and also inhibit crops that are prone to growing buds on roots or stems.

Ethephon is commonly used in 40% SL, which is a high-quality and efficient plant growth regulator that accelerates maturity, shedding, aging, promotes flowering, and regulates the sex transformation of some plants. Under certain conditions, ethephon can not only release ethylene itself, but also induce plants to produce ethylene.