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I was also curious about that,

but could not find more specific information. "Special" might be versions to accommodate specific needs of certain end users, for example anti-corrosion paint. It might also mean deviation from ГОСТ (GOST, State Standard). GOST, which was country's manufacturing law, described specifications in minute detail. Any deviation from GOST required special approvals.


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  • I was also curious about that, - sser2 23:00:42 04/26/17 (0)

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