Q1:
Is your product official registered ? Yes, our products have been registered in china and some of other countries,our products have ISO certificate.
Q2: Are you manufacturer? Yes, we are a manufacturer and OEM and Elbowless is welcome .
Q3: Is your instrument compatible with Karl Storz ? yes. It is compatible .
Q4: How is the quality of your product? our customers in china and other countries are satisfied with our products.