People's Republic of China communications industry standard "underground communications pipeline with preformed composite man (hand) hole
China Association for the Promotion of International Science and Technology "assembled high-strength composite resin inspection 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
Housing and Construction Department Announcement
Technical standards for assembled high-strength composite resin water supply wells
A structural type of manhole cover
A kind of combined municipal inspection well
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