Ống hiệu chuẩn dạ dày Size Selection Guide for Phẫu thuật giảm béo Buyers
Gastric calibration tube sourcing usually starts with 32–40 Fr sizes, 1200 mm length, đường cản quang, depth markings and the leak-test workflow. This guide helps distributors, hospital projects and OEM/ODM customers build a selection checklist.




