The Mini Rotatable 90 ° Open Tube Furnace is a small high-temperature processing equipment specifically designed for laboratory environments. It is particularly suitable for experiments such as material synthesis, heat treatment, and annealing that require controlled or vacuum atmospheres. The main feature of this device is its unique rotatable design, which allows the furnace body to rotate 90 degrees along the axis, facilitating the loading and unloading of samples. In addition, the mini size design makes it very suitable for use in laboratories with limited space.