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Letter 4107
HARD ANODISING COLOUR
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Dear sir,
We are facing the following problems in our Hard coat Anodising.
Patchy marks like small round, found after hard anodising. In these
areas colour is dull, and we tried with regular cleaning methods
only. Pls advise us how to avoid this, can we do any special pre
cleaning process or this is a raw material problem.
ELANGOVAN
- INDIA
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