About us

Guard Sound Industry Co., Ltd. established in 1973, we one of the leading manufacturer and supplier of gas heating industry. We specialize in providing control system, gas valve and accessories for gas heating appliances.

• 1977 First semi-automatic gas water heater.
• 1979 First automatic gas water heater.
• 1989 First automatic gas water heater in China with technical support from TbK.
• 1990 First battery type automatic gas water heater .
• 2001 First battery type modulation system.

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