"lvyin"series slowly-releasing liquid fertilizers are mainly made by the UF(Urea Formaldehyde)Liquid slowly-releasing Nitrogen fertilizers which are are type of soluble green liquid mew-brand fertilizers and should be blended and dissolved within soluble phosphorus(P),Potassium(K),some medium and trace elements(TE),These products should be particularly applicable for golf courses green lawn, varieties of sports lawns, scenery and agriculture,varieties of economic crops and so-forth They could be irrigated and sprayed directly from water.In the meantime,this kind of liquid fertilizers also have the feature of protecting environment, improving soil,and saving resources and labors.The quality of the products have been achieved on the intemational advanced level.