... aluminum ingot used. 3. GB5237 standard. 4. Easy installment. thermal-break profile, heat seperate profile, aluminum extrusion, aluminum profile1. Surface finish ... , 6063, 6063A, etc.3. Temper: T4, T5, T6.4. Production capacity: 100,000 tons annually.5. OEM and ODM service available ... ,pallets,steel rack or as per client's demand thermal-break profile