1. ??n v? s? nghi?p ho?c doanh nghi?p cung ?ng d?ch v? quan tr?c môi tr??ng lao ??ng.Fabricated from blue wool with white, red, or buff facings, the frock coat became the normal uniform for American officers by the top from the war. The coats usually highlighted elaborate gold or silver lace, epaulettes, and buttonhole trim, emphasizing the Status