一、Product name:titanium bicycle crank二、Specification:1. Material: titanium2. Technologies: investment casting,Website:http://www.advanced-titanium.com, CNC, 3D printing3. Grade: GR1, GR2 ... (TA1, TA2, TC4)4. Standard: ASTM,GB,GHB,GJB5. Application: titanium bike parts6. Surface treatment: polishing (mirror), sand blasting, shot blasting ...