Ngai Hing Hong Co. Ltd. engages in the manufacturing and trading of plastic materials, pigments, colorants, compounded plastic resins, and engineering plastic products. It operates through the following segments: Trading, Colorants, Engineering Plastics, and Others. The Trading segment involves in the trading of plastic materials. The Colorants segment manufactures and sells colorants, pigments, and compounded plastic resins. The Engineering Plastics segment engages in the production and sale of engineering plastic products. The Others segment offers other corporate and business activities. The company was founded by Sai Chung Hui and Kwok Kwong Hui in 1970 and is headquartered in Hong Kong.