This product is one kind of orthodontic direct bonding system resin with aromatic bis dimethyl acrylate resin as its main material. As a new-type orthodontic direct bonding system, it is convenient to use with little waste, easy to handle independently and has a favorable clinical bonding strength. Kit consists bottle Primer(3ml), Syringes  Paste (3.5g), Syringes Etchant Gel (2.5ml), 7pcs Brushes, Syringe Tip. Overview Preparation: Clean tooth enamel surface,eliminate tooth contamination,rinse then isolate tooth and blow-dry. Etching: Etching the enamel of the tooth with acid etchant for 50 or 60 sec. Rinse and dry with clean air. If the enamel does not have a chalky appearance, pls. repeat the process; Brushing: apply a thin layer of the primer over the etched enamel with the brusher; Packaging Detail: 1 x bottle（3ml）Primer 1 x Syringes (3.5g each)Paste 1 x Syringes (2.5ml) etchant Gel 20 x Brushes 1 x Syringe tip  Storage: Store at 25℃ or less in a cool and dry place and avoid direct sun exposure. Recap the syringe after use.