1. Loosen metal screws, conduct laboratory heating research, kitchen baking, and maintain equipment. Automobile repair and welding, aviation equipment repair, water and electricity engineering equipment maintenance. Repair welding of electrical appliances and motor control boxes. Circuit board repair welding, IC board repair welding, indoor and outdoor line road welding. Electronic components on tin, welding, etc.2. Filling gas: (1)Use gas filling and make the switch is closed at OFF, then replenish. (2) the gas canister into the gas hole, the downward pressure to fill. (3) about 10 seconds, can be completed filling gas, wait a few minutes, wait for the gas to stabilize, and then use. (4) If there is a out sound at after filling the gas, use the tip of the pen to slightly press the gas inlet to eliminate it.3. Ignition: (1)Change the tip of the soldering iron. (2)push the switch to the ON place, hear the " sound. (3) push the electronic switch can be ignited. (4) the fire and burn for 3 minutes, to fire out of reduction, the iron head will continue to heat. (5) adjust the size of the .(6) the product temperature up to 1300 degrees (soldering iron temperature 450 degrees), the use of safety, after using the switch off to the OFF position. (7) the use of gas soldering iron, pay attention to wait until the is completely eliminated, the object inside the iron becomes red, and then operate to extend the life of the iron head.Caution:1, replacement connector, wait for cooling replacement or change in advance.2, the use of the soldering iron head, high temperature and hot, do not touch with your hands.3,Adjustment knob can control the amount of gas and temperature, usually placed in the middle position.4, after use to cool down, and then , do not place in high temperature or direct sunlight.5,Not suitable for children, must be placed in a proper place when collecting.6, use high quality canned gas to fill, fill from the fire source.7,Because the gas may be slaggy, it is necessary to clean the nozzle frequently.8,When cleaning, press the nozzle on the gas tank outlet and spray to achieve the cleaning effect.9,Avoid heavy fallModel Number: Butane Soldering Iron Kittype 1: Butane Gas Soldering Irontype 2: Gas Soldering IronButane Soldering Iron Kit: Soldering Iron KitFeature 1: gas soldering ironFeature 2: butane gas welding Feature 3: welding penFeature 4: butane welderFeature 5: cordlessFeature 6: blow penSoldering Iron Multi Kit: Cordless Butane Soldering Iron Multi KitType: B: Pointedcolor:As shownMaterial:metal+plasticPackage Contents:1 set x Portable soldering iron toolOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.