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这篇材料是苏联专家巴拿马哈夫特为一厂为的，因为我们看到目前我局有些厂尚未按照这些规定作到，特刊出以供大家参考采用。──编者
This material is a Soviet expert Panama Haft for a factory, because we see some of our bureau has not yet done so in accordance with these provisions, special publication for your reference. ── Editor