The Bulgarian Branch Chamber - Machine Building is a non-profit association for rendering assistance, encouragement, representation and protection of the interests of its members. The Branch Chamber is a voluntary legal body. It was established in the autumn of 1991. Members of the Chamber are more than 260 companies - basic producers from all sectors of the Machine Building. They produce: metal-working machines and tools, wood-working machines, hydraulics, engine-driven and battery-driven trucks, machines and equipment for the food, tobacco and wine industry, refrigerating engineering, agricultural machinery, heavy machines and equipment, motor vehicles, ships, metal products etc. Members of the Branch Chamber are the casting production firms which traditionally are connected with the machine building. The Branch Chamber member-companies manufacture about 70 % of the Bulgarian machine building products.