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北京市第五市政工程公司与河北省冀县无线电仪器厂自1986年开始联合研制的JW-Ⅰ型恒温、恒湿混凝土试块标准养护箱(见封三照片),现已通过五个省市的有关五十个行政科研和建筑单位的联合评审,进入试生产阶段。联合评审意见认为: “JW-Ⅰ型恒温、恒湿混凝土试块标准养护箱设计合理,具有调温、调湿范围较广,控制精度高,运行可靠,操作简便,一机多用
Beijing Municipal Fifth Municipal Engineering Company and Hebei Province, Hebei Radio Instrument Factory since 1986, jointly developed the JW-Ⅰ type constant temperature and humidity concrete test block standard curing box (see the cover of the three photos), has now passed five provinces Of the fifty administrative research and construction units of the joint assessment, into the trial production stage. The joint assessment opinion: "JW-Ⅰ constant temperature and humidity concrete test block standard curing tank design is reasonable, with a wide range of temperature control, humidity control, high control accuracy, reliable operation, easy operation, a multi-purpose machine