1974年8月5日至20日,瑞士在北京举办了工业展览会。在焊接技术方面,参加展出的有两个单位:一个是卡斯托林—厄特蒂协会(Castolin—Eutectic Institute),一个是许拉特(Sehlatter)公司。前者以堆焊、钎焊、喷焊、和特种焊接材材为主,后者以接触焊机为主。现根据在展览会中的表演、交谈和获得的资料,就卡斯托林—厄 From August 5 to 20, 1974, Switzerland held an industrial exhibition in Beijing. There are two units on display for soldering technology: one is the Castolin-Eutectic Institute and the other is Sehlatter. The former to surfacing, brazing, spray welding, and special welding materials based, the latter mainly to contact welding machine. According to the show in the show, talk and access to information on the Castelnau - Eritrea