Should your design has any neckline or centre entrance facings, these have to be sewn in position before you attach the collar, as if the collar is ‘closed’ it will enclose the seam allowance of your garment and facings for the tidy complete.a) V?n b?n ?? ngh? công b? ?? ?i?u ki?n th?c hi?n ho?t ??ng quan tr?c môi tr??ng lao ??ng c?a t? ch?c