... drastic temperature change (max. temp. 170o)2) High surface hardness: 5 or 6 times of that of ... , hard to break, safe to use3) Handsome styling: high transparency. Ideal for the modern kitchen4) Shape: round, ... 4mm, 5mm7) Color: transparent, blue, green, your logo8) With / without air hole9) Ring material: s/s201, s/s202, ... or polybag or paper-boardOuter packing: cartons with handle Tempered Glass Lid