芬兰坦姆洛克公司在长期发展重型液压凿岩机的基础上,最近又研制成功手持式液压凿岩机系列,HH50型为其中之一。据该公司在1981年6月西德杜塞尔多夫举办的国际采矿设备展览会介绍,该机已生产250台,畅销于英国、法国、美国、加拿大等国。 Based on the long-term development of heavy-duty hydraulic rock drills, the Tanzanian company Finland has recently developed a series of hand-held hydraulic rock drills, one of which is the HH50. According to the company in June 1981 in Dusseldorf, West Germany organized by the International Mining Equipment Exhibition, the aircraft has produced 250 units, selling in Britain, France, the United States, Canada and other countries.