STRONG TECHNOLOGY adopts advanced Danish laser cutting, ultra long bending machine and automatic welding machine, to ensure the accuracy and tightness of the production of Bell (Muffle). The maximum length of 10mm high-strength heat-resistant steel 28m Bell can be folded. STRONG composite corrugated muffle tank has its unique production technology, Enhance the support strength of the heated steel plate, achieve the effect of prolonging the service life of the Bell, and undertake large-scale incoming processing.