How is the air quality in Ningbo Chimei electronics workshop?

I'm from Ningbo Chimei Electronics. Actually, the air inside is ok. The temperature inside is around 23 all the year round. If you enter the workshop in100000 area, you should wear dust-free clothes and a mask, so that the whole person is wrapped up tightly and only two eyes are missing. If you enter the general area, just wear dust-free clothes. I may not be used to it when I first went, but it will be nothing after a long time.