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QC Innovation

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Improve the first-time acceptance and installation qualification rate of waterstop steel plates
Improve the first-time acceptance pass rate of tunnel smooth blasting
Improve the installation qualification rate of steel arch frames for initial tunnel support
Improve the first-pass acceptance rate of ductile iron pipe jacking construction quality
Improve the first-pass acceptance rate of shotcrete construction on clay slopes
Improve the first-pass acceptance rate of the high groundwater level drainage and pressure reduction system
Improve the First-Time Installation Qualification Rate of Large-Diameter PCCP Pipes
Improving the Quality Acceptance Rate of Unequal-Height Mortared Stone Warped Surface Construction

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