GlassLock products are primarily manufactured in South Korea. The company focuses on producing high-quality glass storage containers and kitchenware, utilizing advanced technology and materials to ensure durability and safety. GlassLock emphasizes the use of borosilicate glass, which is known for its resistance to temperature changes and thermal shock, making it suitable for a variety of uses in the kitchen. The manufacturing process involves stringent quality control measures to meet international standards. This commitment to quality ensures that GlassLock products are safe for food storage, microwave use, and dishwasher cleaning. For the latest information regarding sourcing and manufacturing, it may be helpful to check the current GlassLock website.