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CJJ 39-1991 Standard for Inspection and Assessment of the Quality of Ancient Building Construction Projects (Northern Region)
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This standard is formulated to provide a basis for the inspection and evaluation of the quality of ancient building construction p
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 38-1990 Urban heating network engineering quality inspection and assessment standard CJJ38-90
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CJJ 38-1990 Urban Heating Pipeline Engineering Quality Inspection and Assessment Standard CJJ38-90 CJJ38-1990 Standard download de
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 37-1990 Urban Road Design Specifications
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CJJ 37-1990 Urban Road Design Specifications CJJ37-1990 Standard download decompression password: www.bzxz.net
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 34-1990 Urban Heating Network Design Code CJJ34-90
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CJJ 34-1990 Urban Heating Network Design Code CJJ34-90 CJJ34-1990 Standard download decompression password: www.bzxz.net
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 33-1989 Specification for Construction and Acceptance of Urban Gas Transmission and Distribution Projects CJJ33-89
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CJJ 33-1989 Specification for Construction and Acceptance of Urban Gas Transmission and Distribution Projects CJJ33-89 CJJ33-1989
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 32-1989 Design specification for water treatment containing bath water
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This specification is formulated to improve the design level of water treatment for algae-containing water, promote the developmen
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 31-1989 Design standard for auxiliary buildings and auxiliary equipment of urban sewage treatment plants
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This standard is formulated to make the design of ancillary buildings and ancillary equipment of urban sewage treatment plants bas
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 30-1989 Construction and acceptance regulations for rigid polyvinyl chloride pipes for building drainage CJJ30-89
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CJJ 30-1989 Construction and Acceptance Specification for Rigid Polyvinyl Chloride Pipes for Building Drainage CJJ30-89 CJJ30-1989
2025-03-15 category：Urban construction industry standards (CJ)+ View
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