Feng Chieh Tsai

Yungtay Engineering Co., Ltd. engages in the design, manufacture, installation, and maintenance of elevators. Its products include passenger elevators, high-speed elevators, delivery elevators, observation elevators, hospital elevators, hydraulic elevators, and freight elevators. It also offers escalators and autowalks. The company was founded on July 9, 1966 and is headquartered in Taipei, Taiwan.

Part of Yungtay Engineering Co., Ltd., Shanghai Yungtay Elevator Equipment Co. Ltd. is a private company that manufactures and supplies elevators, escalators, parking systems and other related products. The company is based in Shanghai, China.

Evest Corp. researches, develops, manufactures, and sales automated manufacturing and packaging solutions. It services include mechanical design, software engineering, vision technology, electric controlling, and related system integration. The firm specializes in analyzing the emerging production processes among a variety of segments, tailoring solutions in addressing customers requirements, and consulting customers in improving their plant operation efficiency. The company was founded in 1999 and is headquartered in Taoyuan City, Taiwan.

Yungtay-Hitachi Construction Machinery Co., Ltd. is a Taiwanese company that manufactures a variety of products including household electronics, computers, electrical equipment, automotive parts, and power equipment. The joint venture company is based in Taoyuan, Taiwan.