前不久在上海召开的第五届国际制冷、供暖、通风、空调及食品冷冻加工展览会,在一个既无音响伴奏、又无华丽装饰,也无纪念品可发的,一个很不起眼的展台旁,常有不少参观者于此驻足不前。他们中有高等院校的教授、讲师,科研院所的专家、工程师,工厂企业的厂长,老总,制冷维修行业的经理、修理工……;他们或 Not long ago held in Shanghai in the Fifth International Refrigeration, Heating, Ventilation, Air Conditioning and Food Frozen Processing Exhibition, both in a neither sound accompaniment, no gorgeous decoration, no souvenir can be made, a very humble booth , Many visitors often stop here. Among them are professors, lecturers from colleges and universities, experts from scientific research institutes, plant managers, factory managers, CEOs, managers of the refrigeration service industry, repairmen ... or