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we are always adheres to the concept of "scientific research supports the brand, service achieves value", gives full play to the technical resources of the institute of urban environment of the chinese academy of sciences, and continues to increase investment in r & d. our company is deeply committed to the development of high-efficiency air filtration material technology and personal respiratory such as anti-dust disposable mask of industy, also for eye and head protection products.Especially has made breakthroughs in the fields of high-pressure electrostatic spinning nanofiber filter material, high-performance water-residual meltblown filter material, electrostatic filter cotton, non-adhesive charcoal cloth, dust/toxicity half-mask, high-performance gas adsorbent, etc. Currently, it has been granted 7 patents for invention and 19 patents for utility model.