... , white and green).This product is for single-layer conventional hardness 60-85 A, three degrees of hardness can -80/90/80A degrees ... substrates clear. This series of products can be single-layer and three-tier products (three-tiered is green,white and green). It can ... ,blue and yellow.This product is for single-layer conventional hardness 60-90 A, the three-tier of hardness can produce 60/90 ...