Since established in 1932, for the past 90 plus years, one of the US oldest detergent manufacturer Stone Soap has been specializing its business in research, development, and manufacturing of environmental cleaning detergents for various industrial and commercial cleaning applications. In 2000, Stone Soap formed a joint venture with EM Group Limited in Hong Kong using the OG brand and committed to produce cleaning detergents and disinfectants to meet local cleaning demands. All cleaning products are designed for performance, ease of use, environmental friendly, safety, as well as disinfection. OG is continuously updating the product profile to meet the ever changing cleaning requirements and demands of today’s cleaning market. In Hong Kong, the manufacturing plant is ISO9001:2015 certified with factory registration approval by the Government. And products are tested safe to use by accredited laboratories.