The middle classes tend to hire decoration companies, which subcontract to whichever construction firm pays the best kickbacks.
中产阶级倾向于雇用装修公司，后者则将工作转包给回扣最多的建筑队。
Participate in subcontract Bidding and tendering process of construction steel structure ;
参与工程项目建设的钢结构分包的招投标；
Participate in subcontract Bidding and tendering process of construction steel structure ;
参与工程项目建设的钢结构分包的招投标；
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