Features: . Manufactured with high quality control . Super quality float glass with thickness of 4mm, 5mm . High surface hardness: 5 or 6 times of that of normal, hard tobreak, safe to use . Excellent heat endurance: can withstand drastic temperature change . Safety of temp. glass and best cooking effect . Varies types, such as round, square, oval . Size from 12 to 40cm, OEM welcome . Varies color of glass: transparent, blue, green, dark brown, your logoPacking: Exportable carton