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This standard is formulated to unify the quality inspection and evaluation standards for ancient building construction projects in
This specification is formulated to unify the standards of urban pedestrian overpasses and pedestrian tunnels and make the project
This standard is formulated to unify the commonly used legends and diagrams in landscape mapping and to adapt to the construction
This specification is formulated to unify the construction method of pavement slurry seal and ensure the construction quality of s
In order to ensure that urban feces treatment can achieve the hygienic purpose of preventing feces pollution, and that feces purif
CJJ 63-1995 Polyethylene Gas Pipe Engineering Technical Specifications CJJ63-95 CJJ63-1995 Standard download decompression passwor
This regulation is formulated to improve the technical level of house leakage repair engineering, ensure the quality of repair, an
CJJ 61-1994 Technical Specification for Urban Underground Pipeline Detection CJJ61-94 CJJ61-1994 Standard download decompression p