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Group standard for IoT intelligent terminal protection water meter wells

Group standard for IoT intelligent terminal protection water meter wells

Standardization Working Committee of China Association for the Promotion of International Science and Technology

Standardization Working Committee of China Association for the Promotion of International Science and Technology

Housing and Construction Department Announcement

Housing and Construction Department Announcement

Technical standards for assembled high-strength composite resin water supply wells

Technical standards for assembled high-strength composite resin water supply wells

A structural type of manhole cover

A structural type of manhole cover

A kind of combined municipal inspection well

A kind of combined municipal inspection well

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