... ISO9001/14001certification;GB/T6892-2000,GB/T5237-2004stand. 1) Item: aluminum profile for solar panel2) Alloy Temper: 6061,6063,6060,6082T4/T5 ... ) Fineworkmanship,Goodcurvature,Goodglossiness,Goodappearance,Solidity, strong in corrosion resistance,8) Die making time:10-15 days.9) Outer diameter:within 200mm10 ...