* Thermocool boxes: These are insulated containers used to keep food and beverages cold or hot. They're typically made from polystyrene foam (Styrofoam), which is lightweight and provides good insulation.
* Thermocool air conditioners: These are manufactured by the company Thermocool, which is owned by Haier. The specific materials used in their air conditioners vary depending on the model, but common materials include metal, plastic, and electronic components.
To be more specific, please tell me what you're referring to by "Thermocool" so I can provide a more precise answer.