1) Material: stainless steel 304/204 2) Double layers 0.3mm x 2 3) Aseismatic 4) Heat-resistance 5) Noise elimination 6) Innovative design, universal style 7) Environmentally friendly Our company has developed fully automatic auto bellows forming equipment. We use water as the medium during production. Hydraulically formed bellows are beneficial to auto exhaust. Flexible metal hose