1. ??n v? s? nghi?p ho?c doanh nghi?p cung ?ng d?ch v? quan tr?c môi tr??ng lao ??ng.Made of blue wool with white, pink, or buff facings, the frock coat grew to become the regular uniform for American officers by the top in the war. The coats often highlighted elaborate gold or silver lace, epaulettes, and buttonhole trim, emphasizing the Status a