Features: 1) Mainly used for round cookware diameter of 100-400mm 2) It can be divided into normal dome, high dome, high dome cut, with or without steam hole 3) Made of 4mm float clearly glass with SUS 304 x 0.3mm or SUS 301 x 0.3mm stainlesssteel producing area:nantong ,china payment:T/T supplying capacity:8,000,000pcs/month