Ink filter color/mark pen roll core pen parts ink Watercolor pen cotton coreOur Company:Wuxi Shengye Tebang New Materials Technology Co., Ltd is a fiber manufacturerspecializing in the development and production of special fibers and fiber products. The company is equipped with excellent technological research and development team. It has powerful technical resources, advanced production equipment and strict management teams. The company also has its own patent technology and unique technological capabilities in the development of special fibers and products.