In the event your style and design has any neckline or centre front facings, these should be sewn in place before you decide to connect the collar, as if the collar is ‘closed’ it's going to enclose the seam allowance of the garment and facings to get a tidy complete.b) H? s? công b? ?? ?i?u ki?n quan tr?c môi tr??ng lao ??ng theo h??ng d?n q