... dia 20cm,4mm thickness MaterialFood grade silicon&toughened glassColorAny color for silicon ringe is available.LogoSilkscreen logo,embossed or debossed ... welcomedMOQ3000pcs per itemTrial orderAcceptableSamplesA few free samples are ready for youProduction capacity1000pcs per day,or we can make extra ... ,automobiles,LED,etc.We are working on silicon products for more than 10 years.We have a dust-free ...