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本刊去年第10期发表了马昌华的《如何做到焊割炬橡胶软管的安全使用》一文以后，陆续收到很多读者来信，对胶管颜色及耐压强度提出意见。现将马昌华与全国橡胶与橡胶制品标准化技术委员会的来往信件摘要转告读者。
The 10th issue of last year, published by Ma Changhua, “How to make the safe use of torch rubber hose,” a text, one after another received a lot of letters from readers, the hose color and compressive strength advice. Ma Changhua now with the National Rubber and Rubber Products Technical Committee of the summary letter to the reader.