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www.bjbdn.com chongqing yiwei geotechnical engineering co., ltd. specializes in the construction of various foundation engineering and treatment of disease piles in chongqing; chongqing reinforcement and decoration projects; bridge and slope prestress construction. chongqing works and decoration company is well-equipped and has various domestic and foreign brands. there are 10 rotary drilling rigs, 20 sets of auger rigs, and 30 sets of impact drilling rigs. 2025-01-15