Yuk Wing Group Limited 

Yuk Wing Group Holdings Limited, an investment holding company, designs, manufactures, and trades in down-the-hole (DTH) rock drilling tools in Hong Kong, Macau, the People's Republic of China, and internationally. The company operates through Manufacturing and Trading of DTH Rockdrilling Tools; Trading of Piling and Drilling Machineries; and Trading of Rockdrilling Equipment segments. It offers DTH hammers, casing systems, button bits and bit openers, drill pipes, cluster drills, and casing tubes. The company also trades in piling and drilling machineries, and rock drilling equipment. Its products are used in building foundation and piling on construction sites, mining and quarrying, water well drilling, utility linings, micro-tunneling, and overburden drilling. The company was founded in 1997 and is headquartered in Central, Hong Kong. Yuk Wing Group Holdings Limited is a subsidiary of Colour Shine Investments Limited.