N2, ... N12) is defined in ISO 1302. Each number corresponds to an Ra value. Note that the scale is logarithmic. Therefore, the difference between N8 and N7 is much more significant than the difference between N7 and N6.
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Industry NewsWhat is the role of ALOx film?May 28,20201. Widely used in Packaging barrier for food such as meat, cooked food, biscuits, candy, dried fruit, tea, coffee, chocolate, dehydrated food, seafood, flavors, etc. and electronics, daily chemicals, military products, pharmaceuticals, ...