天津搪瓷厂的产品質量从1958年到1961年3月曾出现过“两起一落”的情况。 1958年,天津搪瓷厂通过学上海、赶上海的运动,产品質量曾达到了全国一流的水平,面盆、口杯甲乙品级率最高达到84.87%;理化性能指标的密着力由原来的六千克/厘米提高到八千克/厘米,耐酸失重由0.5毫克降低到0.29毫克,所以厂內的工人把1958年叫做“划时代的一年”。但从1958年以后,产品質量处于停滞不前的状态,不仅落后于西安,而且 Tianjin Enamel Factory quality of products from 1958 to March 1961 there have been “falling apart ” situation. In 1958, Tianjin Enamel Factory passed Shanghai to catch up with the movement of Shanghai. The quality of products reached the first-class level in the country. The top grade of basin and cup reached 84.87%; the adhesion of physical and chemical indexes increased from 6kg / cm Increased to 8 kg / cm, acid loss decreased from 0.5 mg to 0.29 mg, so the workers in the plant called 1958 the “epoch-making year.” However, since 1958, product quality is at a standstill, not only behind Xi’an but also