Ningbo Aokai Security Technology co., LTD., founded in 2005, is a professional manufacturer of gas safety extinct protection device, annual sales 20 million sets. Our company is a professional manufacturer of gas solenoid valve,thermocouple for cooker,magnet valve,thermocouple cooking,thermocouple for gas oven,solenoid valve BBQ,flame failure protection devices, electromagnetic valves and thermocouples used in various gas appliances, integrating R&D, production and trade together.