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Toyo-Sasaki Glass (TSG) products are designed to maintain durability. HS (Hard Strong) Series is its premier brand that has been used in catering, restaurant industry and home use for over 40 years. These long tumblers are easy to hold and to drink from. Each TSG Tumbler has plenty of room at the opening of the glass for beer head to form and to concentrate the beer's aroma.
HS Gold, TSG's proprietary glass toughening process, is applied to the glass edge portion only and is done by heating and rapid cooling to the glass surface thus creating compressive stress. This process protects the applied area from scratches for a prolonged period of time. TSG Long Tumblers also have CC Finish, cold-cutting sheer rim finishing.
HS Blue: Standard HS glassware (Glass-Edge Physical Toughening); HS is a comprehensive toughening process technology developed and trademarked by TSG.
In 2017, the company celebrated 50th anniversary of HS toughened glassware product series, Japan’s first and most successful commercialized glass-edge toughened glassware brand from 1967.