A： Balanced compound fertilizer NPK15-15-15 is suitable for various field crops, such as rice, wheat, corn, etc. It is also widely used in horticultural crops such as fruit trees, vegetables, flowers, etc. It can provide comprehensive and balanced nutrition for crops and promote healthy growth of plants.

A： Ammonium sulfate (steel grade) is used in agriculture to optimize soil pH and improve crop yield and quality; it is used in industry for steel desulfurization to improve steel quality. Its high purity and low moisture content ensure the effectiveness and stability of the product in both applications.

A： Granular ammonium sulfate should be stored in a dry, cool, ventilated environment, away from direct sunlight and high temperature. Keep away from flammable materials and strong oxidants during storage, and ensure that the packaging is intact. When using, please apply the appropriate amount according to crop needs and soil test results, and take appropriate protective measures to avoid direct contact with the skin and inhalation of dust. Follow local regulations and instructions for use to ensure safe operation.

A： The granular ammonium sulfate provided by YNFERT has the following advantages: First, the product quality is stable, and after strict quality control, the purity and effective ingredient content of ammonium sulfate are guaranteed. Secondly, the granular design makes it have good fluidity and easy application, which effectively reduces the waste in the fertilization process. Thirdly, our ammonium sulfate products have good water solubility, can be quickly dissolved and absorbed by plants, and improve the utilization efficiency of fertilizers. In addition, with our global service network, we can provide customers with fast and efficient localized services to ensure that the products can reach users in time to meet the needs of agricultural production. In short, YNFERT's granular ammonium sulfate has become an ideal nitrogen fertilizer choice in the agricultural field with its high quality and convenient use.

A： Yes, Yunnan Yingfu Trading Co., Ltd. (YNFERT) attaches great importance to the ingredients and quality control of its products. We have five factories in operation, all of which strictly follow international standards to ensure the high quality of our products. We always adhere to strict quality control measures and inspection processes to ensure the quality and consistency of each batch of products. In addition, YNFERT has rich industry experience and a global partner network to provide customers with reliable products and services.