Shinshu University in Japan collaborated with wipe manufacturer Tecnos to develop the world's first nanofiber wipes for clean rooms. Electrospinning is used to make a four-layer structure of polyamic acid non-woven material. The base material is polyester. Focus on spinning method and non-woven material structure. Ultra-fine polyurethane fiber can wipe away nano-scale dust particles. Because the non-woven material has the characteristics of non-dusting. It has 30 times the performance of micron fiber wipes, and has been sold as a product to open up applications for semiconductor manufacturing projects. Thousands to tens of thousands of pieces are currently produced.