Crown Seal Public Company Limited is a manufacturer and distributor of Crown Caps, Pilfer-proof Caps, Maxi-Crown, Maxi Cap, Maxi-P and Plastic Caps used as bottling and container seals for products namely carbonated drinks, milk, beer, liquor, soda, drinking water, energy drink, fruit juice, and medical supplies including the hand-held capping machine and Maxi Cap Sealing machine. Furthermore the company also earns the revenue from the printed Sheet Service. Crown Seal Public Company Limited established in 1968 by receiving technological supports from Nippon Closures Co., Ltd. a company in Toyo Seikan Group Holdings Co., Ltd. of Japan. Major shareholders are in the packaging industrial and beverage group such as; Nippon Closures Co., Ltd., Toyo Seikan Co., Ltd, Boon Rawd Brewery Co., Ltd., Thai Namthip Co., Ltd., Serm Suk Public Co., Ltd., and Green Spot Co., Ltd.

Throughout the operational period of being engaged in the business of caps and closures packaging, the Company has developed and built up long standing relations with the customers by firmly adhering to the productions of quality products and create satisfactions to the customers with quick service. The company has still devoted its utmost effort and firmly determined at all out endeavor possible to step forward in becoming the leader in packaging in the future.