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• Long hose and extension hose are not available.　*The gas is not filled.　○Important Incorrect handling of high pressure gas-related equipment may lead to serious accidents such as fire and explosion. Be careful when engaging in such equipment.　In addition, only those who have the "completion certificate of the gas welding skill training course," "license for operations chief of gas welding," or "other items specified by the Minister of Labor" or who have read and understood this instruction manual after receiving instruction from a qualified person are allowed to operate.