1. Đơn vị sự nghiệp hoặc doanh nghiệp cung ứng dịch vụ quan trắc môi trường lao động.Begin by ensuring that the many needed sections have interfacing hooked up. If your collar is often a convertible collar using a stand, sew the collar part to start with. Then sew the stand, enclosing the collar piece within just.Look at