Emmanuel Scheer

Part of Tipco Asphalt Public Co. Ltd., Thai Bitumen Co., Ltd. is a company that manufactures and distributes asphalt products.

Part of Tipco Asphalt Public Co. Ltd., Tasco Shipping Co., Ltd. provides freight transportation services through sea.

Part of Tipco Asphalt Public Co. Ltd., Tasco International (Hong Kong) Ltd. is a Chinese company that supplies construction materials. The company is based in Hong Kong, Hong Kong.

Colaska, Inc. engages in transportation infrastructure construction and maintenance work. The private company is based in Anchorage, AK and has subsidiaries in the United States.

Sully-Miller Contracting Co. constructs roads, railway, seaports, and airports. The private company is based in Brea, CA.

Pechiney, an international manufacturer with core businesses in primary aluminum, aluminum fabricated products and high value-added packaging. In addition, it manufactures ferroalloys and operates an international trade business

Part of Tipco Asphalt Public Co. Ltd., Kemaman Bitumen Co. Sdn. The company is based in Kuala Lumpur, Malaysia. Bhd. constructs and develops bitumen refinery.