what is the carpet and rug institute seal of approval?
地毯和地毯所认可的标准是什么?
cri tests and gives its seal of approval to deep cleaning extractors(vacuums)in 3 categories: soil removal, dust containment, and carpet texture retention. high-qualitycertified vacuums improve air quality and extend the life of the carpet.
cri试验和3种深层清洁机(真空):移除土壤，灰尘控制，和地毯的结构保持的认可标准。高质量认证的真空装置能改善空气质量和延长地毯的寿命。
