удаление цвета побежалости на нержавеющей стали, после сварки, эл.хим. пассивацией по дешману
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![Обозерская — штаб ЖД фронта [Интервенция на севере в цвете]](https://sun9-52.userapi.com/XJzOsqxZG__eVWWpl18TLeC4N2L5oW8f-YpMyQ/ymm6PemTVFI.jpg)
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