Lab Furnace A lab furnace is a staple piece of equipment in many science and industry labs. These furnaces are capable of heating substances to extremely high temperatures -a necessity for many experiments and procedures. For something like melting metals, baking ceramics or even putting materials under extreme conditions. About ZONWON: ZONWON focuses on producing high quality Laboratory Ashing Furnace to support scientists, researchers, and manufacturers. Selecting the proper furnace is also important, as it can affect the results of experiments or the quality of products being produced.