Can I wear a hairpin to enter the dust-free workshop?

I can't. In order to avoid bringing in too much dust, the instruments, equipment and daily necessities in the dust-free workshop have certain cleanliness requirements, and it is strictly forbidden to use paper box rags. Dust-free workshops in the electronics industry also have anti-static requirements. The main risks of wearing jewelry are: bringing in dust, easily generating static electricity, and not ensuring property safety. Dust-free workshop refers to a specially designed room that removes particulate matter, harmful air, bacteria and other pollutants from the air in a certain space, and controls indoor temperature, cleanliness, indoor pressure, airflow speed and distribution, noise and vibration, lighting and static electricity within a certain demand range.