Lub 12th International Tsev thiab Decoration Materials Expo muaj nyob rau hauv Kunming, Yunnan los ntawm Lub Xya hli ntuj 29 mus rau 31, 2021. Lub exhibition yog muab faib mus rau hauv lub nroog dej technology Hall, ntsuab zog Hall, polymer waterproof khoom Hall, lub tsev science thiab technology Hall, qhov rooj.. .
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