A controlled experiment of salt spray test(NSS).
Both are tested in 240 hours, 304 Stainless steel with PVD-black coated.
There is only one process different between two lever handles, which result in the following experimental result.
More process information please contact our staff: info@vansko.cn
After receiving the precision-cast stainless steel product and we did a Salt Fog Test after polishing , and the problem is shown in below picture.
But why does this problem occur?
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