中央决定：周开荃履新

Group 1 - The article announces the appointment of Zhou Kaizhuan as the new General Manager and Deputy Secretary of the Party Committee of China National Machinery Industry Corporation (Sinomach) [1] - Zhou Kaizhuan, born in September 1973 in Chongqing, has previously worked at China Ordnance Equipment Group and Changan Automobile Group [1] - Sinomach is a key state-owned enterprise directly managed by the central government and has consistently ranked first among the top 100 enterprises in China's machinery industry [1]