Wing Sun Hui

GP Batteries International Ltd. is an investment holding company, which engages in development, manufactue, and marketing of batteries and battery-related products. The firm's products include general batteries, including lithium, alkaline, and carbon zinc batteries; rechargeable batteries; and specialty batteries, such as cordless phone, photo, watch, electronic device, car alarm, hearing aid, smoke detector, and lantern batteries. It also offers portable power banks; battery chargers; flashlights; solar products comprising solar portable power sources, solar panels, and solar chargers; and lighting products, as well as accessories, such as car adaptors. The company was founded in 1990 and is headquartered in Singapore.

The Hong Kong Institution of Engineers operates as a professional membership organization. The non-profit company is based in Hong Kong, Hong Kong. The CEO of the Chinese company is Wing Hang Sit.

Sylva Industries Ltd. develops and manufactures rechargeable batteries and primary button cells. The company was founded on December 5, 1975 and is headquartered in Hong Kong.