Crystal Cook-N-Serve Products Pvt. Ltd. Offers Concave Griddle Non Stick Cookware. Crystal Cook-N-Serve Products Pvt. Ltd. Is an ISO 9001:2000 registered organization that manufactures products under the registered brand name `Crystal`. The Concave Griddle Non Stick Cookware is designed for daily household kitchen purpose, restaurants, hotels and canteens. This Non Stick Cookware has FDA Compliant coating. The top coat provides outstanding integrity; reinforced mid-coat enhances scratch and abrasion-resistance; and reinforced primer fortifies abrasion-resistance and enhances overall durability.