Anhui Bureau of Quality and Technical Supervision Standards Branch, the well-known experts of the quality inspection of homes, standard homes of long-acting slow-release urea and determination "enterprise standard stringent scrutiny and technical feasibility studies, and to give a higher rating. The experts pointed out that: certain innovation was the formulation of company standards, product safety performance and stability in the increase in urea release agent does not reduce the nitrogen content, and walk in the forefront of the provincial corporate standards, has a strong promotion and value.