The humidity must be 0 ~ 100% RH, the lower temperature limit is generally -40 degrees or -55 degrees, and the upper temperature limit is generally 120 degrees, 180 degrees, 230 degrees, etc. Other questions can also be set according to customer requirements. The pressure is of course adjustable!
If you want to achieve more than 20% humidity in the environment above 100 degrees, you must pressurize it!