Established since 1977, Dragon Shing Rotocasting Co., Ltd. has been an innovator in the field of porous plastics technology. We specialize in producing cost effective and high quality porous plastics for a broad range of applications in the industrial, medical and consumer products markets.

With 30 years experiences, our development team devotes to offers our customers a wide variety of knowledge and experience to support customers' needs. We utilize porous plastics in filters, silencers and nibs, etc??neral applications like gas filtration, liquid filtration, wicking, venting, nibs of writing instrument, noise reduction.