... cooktop 3.We can drill holes perfect Ceramic GlassOur ceramic glass can be well used to induction ... cooktop, heater, etc.The detail of our glass:1.Thermal shock resistance≤800oC2.Black glass ... cooktop.3.We can drill holes perfect on the glass, and we can drill Ø12, Ø16, Ø ... are the factory, we can produce the ceramic glass for your demand, pls contact with me ...