Utena Osano

Propell Integrated Pte Ltd. engages in the provision of engineering consulting services. It specializes in mechanical and electrical integrated solutions. It also offer supply, installment, and management of electrical engineering, extra low voltage, air conditioning and mechanical ventilation, fire prevention and protection and energy efficiency systems, and integrated facilities. The company was founded by Leng Yew Meng in 1999 and is headquartered in Singapore.

Part of Nihon Housing Co., Ltd., Caterina Building KK is a Japanese company that provides cleaning and maintenance services. The private company is based in Tokyo, Japan.