尽管从2009年下半年起,我国气门嘴芯行业形势快速好转,但由于上半年受金融危机影响较大,行业主要经济指标未能转正,销售收入及出口创汇均小幅下降,成为我国首份负增长年报。据统计,13家主要气门嘴芯企业销售收入总计达到 Although the situation of valve core industry in our country has improved rapidly since the second half of 2009, the major economic indicators of the industry failed to turn positive due to the financial crisis in the first half of the year, while the sales revenue and foreign exchange earned from exports decreased slightly, becoming the first negative growth in China annual report. According to statistics, 13 major valve core sales revenue reached