1.

Inner Core

76mm/152mm

2.

Outside Core

360mm-420mm /560mm-620mm,also can make according to customers'requirements

3.

Core Material

Aluminum ; Steel

4.

Surface

One side bright ,the other side matt ;or both side bright

5.

Surface Qualty

Clear ,smooth ,without defects,gaps ,riddles ,lubricant leftovers ,folds and mechanical defect and be chromatic.

6

Grade

Grade AAA

7

Degreasing

Without oil left on surface ,easy compound and printed.

8.

Pinhole

Meet with the international standard.