Thaum lub Plaub Hlis 7th txog 9th, 2011, 22nd International Exhibition for Refrigeration, Air-conditioning, Heating and Ventilation, Frozen Food Processing, Packaging and Storage which is also named China Refrigeration Expo, was held in Shanghai New International Economy Center.Ze li ntawm 1200 tuam txhab uas muag los ntawm 32 ...
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