Maxit, a company of the German construction materials production group Heidelberg Cement, plans to build a new ceramsite panel production plant in Latvia.  Ivi Anna Buce, board member of the Latvian subsidiary, said that the new plant would be situated not far from the Latvian capital Riga and was expected to launch production in the middle of next year.  The new plant`s production capacity will be about 200,000 cubic meters a year, and it is planned to expand it in future, adding another production line.  Maxit group is the world`s leading producer of dry mixes and ceramsite products. It owns 117 plants in 27 world countries.