Abstract: A capacitance sensing switch module is provided. The capacitance sensing switch module for controlling a cooktop includes a plate, at least one key, an insulating pad, a circuit board and at least one foil. The plate is disposed in a side of the cooktop and has at least one hole passing through the plate. The key is disposed in the hole. The insulating pad is disposed between the key and the plate. The key and the plate are separated by the insulating pad. The circuit board is disposed under the plate. The foil is disposed on the circuit board and on the position corresponding to the key. There is an insulation gap between the foil and the key.

Abstract: A capacitance sensing switch module is provided. The capacitance sensing switch module for controlling a cooktop includes a plate, at least one key, an insulating pad, a circuit board and at least one foil. The plate is disposed in a side of the cooktop and has at least one hole passing through the plate. The key is disposed in the hole. The insulating pad is disposed between the key and the plate. The key and the plate are separated by the insulating pad. The circuit board is disposed under the plate. The foil is disposed on the circuit board and on the position corresponding to the key. There is an insulation gap between the foil and the key.

Abstract: An electronic device with a waterproof structure includes a housing structure, a printed circuit board and a protective layer. The housing structure includes a receptacle, a first opening and a second opening. The printed circuit board is disposed within the receptacle and includes plural electronic components and electrical trace patterns thereon. The protective layer is formed on at least a portion of the electronic components and the electrical trace patterns to protect the printed circuit board from moisture attack.

Abstract: Low-pressure hydrocarbon contains methane, ethane, propane, butane, pentane, heptane, isobutene; and petroleum ether. The low-pressure hydrocarbon may further comprises magnesium powders or aluminum powders or the combination of magnesium powders and aluminum powders. Moreover the petroleum ether is areca oil. By addition of petroleum ether, magnesium powders and aluminum powders, the amount of the methane 9 can be reduced to be below 50%, even reduced to a value of 0.5%. Thereby the pressure of the hydrocarbon is reduced greatly. The hydrocarbon is safe and stable. Thereby the pressure of the container receiving the hydrocarbon is reduced. The present invention is light, can be transferred easily and is made with a lower cost.