About Us Shandong Raytop Chemical Co.,Ltd is founded in 2006 with register capital of RMB 5 million. We are professional Optical Brightening Agent manufacturer, is a chemical enterprise with R & D, production and sales together. Our company specializes in the production and sale of Optical Brightening Agent series products, which are widely used in plastic, printing and paper-making industry. In the past two years the company also introduced the industry's advanced testing equipment, high performance liquid chromatography, whiteness meter, automatic melting point apparatus, etc,to establish and improve the integrity of the quality, technical support and after-sales service system. Ensure the company's product quality has always been consistent and stable. In 2010, we got the gove..