Activities of recycling of trace elements from the solutions which circulated in the Aluminium oxide production started in 1957. The first results of the research can be found in 1960, where the first kilogram of Gallium was produced. CMK employs professionals in the branch to meet the requirements of each customer individually. R&D with the aim to be one of important players in the semiconductor industry belongs to the significant activities of the company. R&D and production are in accordance with the care and improvement of the health and safety protection on the workplaces as well as in respect of the environment.