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Question:

With the production of sandwich panels can now control how many years?

With the production of sandwich panels can now control how many years?

Answer:

In general, sandwich panel covers the house! On the iron thickness of 0.4, under the thickness of 0.326, you can protect the new 10 years, no later than 2 years spray a paint, up to 25 years! Aluminized zinc is longer,

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