The influence of anti-scorching agent CTP on blooming from bead chafer of PCR tire was experimentally investigated.
试验研究防焦剂CTP减量对轿车子午线轮胎胎圈护胶喷霜的影响。
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After "years of research", said the state news agency KCNA, it devised a chemical agent that could lengthen the blooming period by a week in summer or by 20 days in winter.