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CJJ 28-1989 Specification for Construction and Acceptance of Urban Heating Pipeline Network Projects CJJ28-89
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CJJ 28-1989 Urban Heating Pipeline Engineering Construction and Acceptance Specification CJJ28-89 CJJ28-1989 Standard download dec
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 26-1989 Technical Grade Standard for House Construction Workers CJJ26-89
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CJJ 26-1989 Technical Grade Standard for House Construction Workers CJJ26-89 CJJ26-1989 Standard download decompression password:
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 24-1989 Technical Grade Standards for Urban Gas and Heat Workers
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This standard is formulated to encourage workers to learn technology, improve their technical level, organize production rationall
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 23-1989 Technical Grade Standards for Workers in Urban Water Supply Industry CJJ23-89
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CJJ 23-1989 Technical Grade Standard for Workers in Urban Water Supply Industry CJJ23-89 CJJ23-1989 Standard download decompressio
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 20-1989 Technical Grade Standards for Urban Gardening Workers CJJ20-89
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CJJ 20-1989 Technical Grade Standard for Urban Gardening Workers CJJ20-89 CJJ20-1989 Standard download decompression password: www
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 18-1988 Technical Grade Standards for Municipal Engineering Construction, Maintenance and Sewage Treatment Workers CJJ18-88
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CJJ 18-1988 Technical Grade Standard for Municipal Engineering Construction, Maintenance and Sewage Treatment Workers CJJ18-88 CJJ
2025-03-15 category：Urban construction industry standards (CJ)+ View
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CJJ 16-1988 Specification for Hydrogeological Survey for Urban Water Supply CJJ16-88
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CJJ 16-1988 Specification for Hydrogeological Investigation of Urban Water Supply CJJ16-88 CJJ16-1988 Standard download decompress
2025-03-14 category：Urban construction industry standards (CJ)+ View
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CJJ 14-1987 Urban Public Toilet Planning and Design Standard CJJ14-87
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CJJ 14-1987 Urban Public Toilet Planning and Design Standard CJJ14-87 CJJ14-1987 Standard download decompression password: www.bzx
2025-03-14 category：Urban construction industry standards (CJ)+ View
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