Get 1000 latest engineering specifications! Architecture, road and bridge, municipal administration, design, construction, mechanical and electrical


Hello everyone, I’m uncle Cha, chief editor of standard Cha, and I’m also an engineer with an attitude

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618 this standard collection activity has been carried out for some time

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This 1000 + specification is based on 618 specification, adding municipal (239), road and Bridge (110) and national product specification (73)

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1040 copies in total! As in the past, the information provided by the standardized search is the result of a long period of collation with reference to official information, content and classification

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I hope I can help you

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The following is how to obtain the 1000 + directory of this standard (if there is any error or omission, please contact the activity administrator)

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