walk-in refrigerators; walk-in freezers; walk-in coolers; refrigerated warehouses, namely, refrigeration equipment for chilling an entire room in order to keep food and beverages chilled; pre-assembled, metal, insulated buildings used solely for cooling purposes; modular insulated panels and doors for walk-in refrigerated enclosures, environmental cooling rooms, freezers, clean rooms; clean room installations and refrigeration systems comprising of condensers and evaporative air cooling units; electronic control systems comprising electronic controllers and electronic control panels for management of operating conditions sold as a component of refrigerators and freezers; and parts and fittings for all the aforesaid goods