In the event your structure has any neckline or centre front facings, these must be sewn in position prior to deciding to attach the collar, as if the collar is ‘shut’ it's going to enclose the seam allowance in the garment and facings for a tidy end.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 l