Audited Supplier 
OEM - welding different kind of buccal tube:
1. Upper 1 Lower 1 , welding single buccal tube ,it have non-convertible buccal tube and convertible buccal tube can choose.
2. Upper 2 Lower 1 , upper site welding double buccal tube, 1 rectangle 1 round , can choose convertible or non-convertible. the
lower site welding single tube, can choose convertible or non-convertible,
3. Upper 3 Lower 2, upper site welding 3 tube : 2 round 1 rectangle and the lower site welding double tube : 2 rectangle
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