What is the temperature and humidity in a medical device manufacturing plant? What is this data based on?

General medical device production workshop temperature, humidity, no special requirements, some special products, such as disposable medical devices, precision instruments and equipment, there will be a clean environment requirements, that is, some parts of the product needs to be carried out in a dust-free clean room, clean room at all levels of the specific requirements of the national standards, but the temperature, humidity, there is no fixed standard.