(Bread from the same package, same expiry date.)
Put two pieces of bread in two containers respectively. Our sterilizer is used in the container on the right.
After almost 3 weeks, no mold growth on the bread.
Put two pieces of bread in two containers respectively. Our sterilizer is used in the container on the right.
After almost 3 weeks, no mold growth on the bread.
② No filter
③
No secondary pollution
④
Co-existence of man and machine