Hisense HBG3601CPS Instructions For Use Manual page 9

Do not use a wok with a round metal support ring. The ring
may trap heat and block air to the burner resulting in a carbon
monoxide hazard.
Do not attempt to lift the cooktop. Doing so m ay damage the
gas tubing to the surface burners resulting in a gas leak and
risk of fire.
Do not use aluminum foil to cover the grates or line any part of
the cooktop. Doing so may result in carbon monoxide
poisoning, overheating of the cooktop surfaces, or a potential
fire hazard.
EN 9