Product ingredients The content of imported gas and butane 95%, It's flammable gas with odor. Warning See attached picture, align the notch (concave part) of the portable cassette gas valve with the convex part of the portable gas cylinder connector and insert. Danger Do not use on the induction cooker, it may accidentally touch the switch of the induction cooker and cause an explosion. Danger Please pay high attention of fireworks and high temperatures. This product is a combustible product using high-pressure gas (liquefied butane gas). Warning For safety, please read carefully and earlier. Please use it correctly according to the requirements. If it is not used properly, it may cause an accident.