AN-SHIN FOOD SERVICES CO., LTD., operating as MOS Burger in Taiwan, is a prominent fast-food chain specializing in Japanese-inspired burgers, rice burgers, and a variety of unique beverages and desserts. Established in 1990, the company emphasizes sustainability, quality, and customer satisfaction, providing high-quality meals with locally sourced ingredients. The chain has received awards for its commitment to sustainability and continues to grow its presence across Taiwan.