本刊讯 北京市市湖渠砖厂研制成功的砖瓦生产工序上的“下土口安全装置”,消灭了下土口工序长期存在的不安全因素,解决了砖瓦行业安全生产的一大难题。前不久,国家专利局批准了该厂的这一专利。国家建材主管部门认为,这套装置在我国黄河以北地区冬季有冻土块的砖瓦行业,有推广 Benshou Beijing City Lake canal brick factory successfully developed brick production process “under the soil gate safety device” to eliminate the next soil gate process long-standing unsafe factors to solve the safety of brick and tile industry a large problem. Not long ago, the State Patent Office approved the plant’s patent. National Building Materials authorities believe that this set of devices in our country in the Yellow River in winter in northern areas have brick blocks of brick and tile industry, promotion