Should your design has any neckline or centre front facings, these need to be sewn in place before you connect the collar, as once the collar is ‘closed’ it will enclose the seam allowance with the garment and facings for your tidy finish.là ??n v? chuyên cung c?p d?ch v? quan tr?c môi tr??ng lao ??ng, h? s? v? sinh môi tr??ng lao theo ngh?