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SNI 19-1955-1990 Scaffolds Occupational safety in installation and usage《脚手架 安装与操作职业安全》.pdf 43

SNI 19-1955-1990 Scaffolds Occupational safety in installation and usage《脚手架 安装与操作职业安全》.pdfSNI 19-1955-1990 Scaffolds Occupational safety in installation and usage《脚手架 安装与操作职业安全》.pdf

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SNI 19-1954-1990 Generator and production machines《发电机与产品机械》.pdf 36

SNI 19-1954-1990 Generator and production machines《发电机与产品机械》.pdfSNI 19-1954-1990 Generator and production machines《发电机与产品机械》.pdf

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SNI 19-1953-1990 Load and unload (harbour) Guides for occupational safety and health《公路与非公路(港口) 职业安全与健康指南》.pdf 38

SNI 19-1953-1990 Load and unload (harbour) Guides for occupational safety and health《公路与非公路(港口) 职业安全与健康指南》.pdfSNI 19-1953-1990 Load and unload (harbour) Guides for occupational safety and health《公路与非公路(港口) 职业安全与健康指南》.pdf

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SNI 19-1951-1990 Directory of libraries information and documentation center《试验目录 信息与文件中心》.pdf 8

SNI 19-1951-1990 Directory of libraries information and documentation center《试验目录 信息与文件中心》.pdfSNI 19-1951-1990 Directory of libraries information and documentation center《试验目录 信息与文件中心》.pdf

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SNI 19-1950-1990 Presentation of periodicals《期刊的阐述》.pdf 14

SNI 19-1950-1990 Presentation of periodicals《期刊的阐述》.pdfSNI 19-1950-1990 Presentation of periodicals《期刊的阐述》.pdf

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SNI 15-1322-1989 Dolomitet lime Colouring test method《白云石 色彩测试方法》.pdf 7

SNI 15-1322-1989 Dolomitet lime Colouring test method《白云石 色彩测试方法》.pdfSNI 15-1322-1989 Dolomitet lime Colouring test method《白云石 色彩测试方法》.pdf

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SNI 15-1321-1989 Chammote refractory mortars hardened at high temperature Test method for friction resistance《耐火泥灰 抗摩擦性能测试方法》.pdf 6

SNI 15-1321-1989 Chammote refractory mortars hardened at high temperature Test method for friction resistance《耐火泥灰 抗摩擦性能测试方法》.pdfSNI 15-1321-1989 Chammote refractory mortars hardened at high temperature Test method for friction resistance《耐火泥灰 抗摩擦性能测试方法》.pdf

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SNI 15-1320-1989 Gypsum Chemical analysis test method《石膏 化学分析测试方法》.pdf 18

SNI 15-1320-1989 Gypsum Chemical analysis test method《石膏 化学分析测试方法》.pdfSNI 15-1320-1989 Gypsum Chemical analysis test method《石膏 化学分析测试方法》.pdf

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SNI 15-1150-1989 Sizes and tolerances of length and width of emery cloth sheet and roll type《砂布长度与宽度尺寸公差》.pdf 5

SNI 15-1150-1989 Sizes and tolerances of length and width of emery cloth sheet and roll type《砂布长度与宽度尺寸公差》.pdfSNI 15-1150-1989 Sizes and tolerances of length and width of emery cloth sheet and roll type《砂布长度与宽度尺寸公差》.pdf

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SNI 15-1149-1989 Grinding wheels Dimensions and tolerances《砂轮 尺寸与公差》.pdf 26

SNI 15-1149-1989 Grinding wheels Dimensions and tolerances《砂轮 尺寸与公差》.pdfSNI 15-1149-1989 Grinding wheels Dimensions and tolerances《砂轮 尺寸与公差》.pdf

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