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industrial buildings
metal enclosure system
truss deck system
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hyundai motor in yantai
xi'an samsung
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settlement center and big data center project of yunda in north region
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national service hotline 400-650-5186
e-mail：info@duowei.net.cn
address：building no.14, block 16, 188 west road, south 4th ring road, fengtai district, beijing, p.r. china
official wechat
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