PP structure; Ark body: adopt 12mm thickness "Taiwan joy" two-sided porcelain white PP board, PP electrode full welding connection; Door plank: adopt 12mm thickness "Taiwan joy" two-sided porcelain white PP board, Handle: adopt 128mm type PVC Martin shape shake handshandle, Door hinge: using high strength plastic hinge, Mesa: adopt 15mm thick "Taiwan joy" two-sided porcelain white PP board, easy cleaning, resistant to corrosion, etc; strong acid-base Lining plate adopts the special PP material 12mm thickness laboratory plate, corrosion resistance and backflow, Backflow liquid can be derived, Windows: adopt 5mm thick organic glass, Power allocation 10A / 220V power socket and two or three 20W / 30W has / 40 w * 2 fluorescent lighting; Take Φ 250 vents, Φ 200 secondary air tuyere, tuyere equipped with adjustable air valve.