TGM established the Crown trademark for its tableware products.
1975
Under the new name, Thai Glass Industries Limited, the company began trading on the new Securities Exchange of Thailand as one of only eight companies listed.
1977
A new furnace (RB4) began operations with a capacity of 150 tons per day.
1980
The second furnace (RB.2) was modified to increase its capacity from 54 to 120 tons per day.
1981
The RB4 furnace was rebuilt to achieve a capacity of 300 tons per day, creating the biggest furnace in Southeast Asia.
