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PVC-free Anesthetic mask Product DescriptionComply with ISO 5365-1 standards.Pass biocompatibility test.Product  features1. Ergonomic shape design.The mask is designed according to human engineering,Website:http://www.bqplusmedical.com, then it only needs smallest pressure and  then reaches a seal over the face. The doctor can operate it by single hand.2. Safe & Green MaterialBQ+ Mask is made of Medical Grade PP & TPE, contains no PVC or Latex, it will protect patient’s  safety and also the e