Welcome to the world of optical brightener agents with ER-I, brought to you by Tianjin Sunrise Import & Export Co., Ltd. As a leading manufacturer, supplier, and factory of optical brightener agents, we are proud to offer ER-I as a cost-effective solution for achieving brighter and whiter fabrics. Our optical brightener agent ER-I is designed to effectively enhance the brightness of textiles, paper, and plastics, giving them a fresh and vibrant appearance. With its excellent performance and competitive price, ER-I is the ideal choice for a wide range of applications in the textile and paper industries. At Tianjin Sunrise Import & Export Co., Ltd., we are committed to providing high-quality products at affordable prices, and ER-I is no exception. We take pride in our ability to offer cheap optical brightener agents without compromising on quality, making us a trusted supplier for businesses around the world. Choose ER-I for a reliable and cost-effective optical brightening solution, and experience the difference it can make for your products.