Yi Tung Tsai

Tung Bao Corp. engages in the manufacture and sale of chemical products. It operates through three segments: De-aromatics Solvent, Petro-Chemical Acetylene, and E-grade Hydrogen. The Solvents is used in machinery, dry cleaning, carrier, metal processing, anti-rust, and lubricants. The Petro-chemical Acetylene is applied in cutting, welding, and heat treatment. The E-grade hydrogen aims at solar processing, light-emitting diode, semiconductor and petro chemical industries. Tung Bao was founded on September 16, 1987 and is headquartered in New Taipei, Taiwan.

Ho Tung Cement Co., Ltd. is a Taiwanese company that produces high-quality and stable Butran cement and blast furnace stone powder using imported raw materials and a Polysius grinding machine. The private company is based in Taichung, Taiwan. The company is known for its professional service teams and flat prices. The Ministry of Economic Affairs has affirmed the company's system with a positive character label.