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中山
中山A sealing and fitting structure for a well body
中山Closed physical examination and well inspection
中山A New Type of Closed Composite Plastic Inspection Well
中山Business license
中山High and New Technology Enterprise Certificate
中山Low-carbon safe operation of urban and rural water supply systems applicable technology and equipment
中山Assembled high-strength composite resin inspection wells
中山Development and Application Technology Integration of Assembled High Strength Composite Resin Water Supply Inspection Well
中山Quality management system certification
中山Occupational Health Management System Certification
中山Environmental Management System Certification
中山People's Republic of China communications industry standard "underground communications pipeline with preformed composite man (hand) hole
中山China Association for the Promotion of International Science and Technology "assembled high-strength composite resin inspection wells
中山Group standard for IoT intelligent terminal protection water meter wells
中山Standardization Working Committee of China Association for the Promotion of International Science and Technology
中山Housing and Construction Department Announcement
中山Technical standards for assembled high-strength composite resin water supply wells
中山A structural type of manhole cover
中山A kind of combined municipal inspection well
中山Electricity intelligent manhole cover
中山Split type composite inspection well
中山A kind of FRP resin inspection well with prefabricated composite seal at the branch pipe opening
中山An IoT monitoring well tool
中山A polygonal reinforced well
中山A composite well with lateral expansion
中山A kind of interlocking diagonal reinforcement at the corners
中山A reinforcing structure with reinforcing bars and reinforcing blocks
中山A deepening tube with grid-like reinforcement
中山A staggered reinforcement structure at the corners
中山A re-straight fit structure of well body and deepening pipe
中山A concave-convex structure docking mating structure applied to a closed composite well
中山A mating composition of a ribbed assembly for a split well
中山A surface reinforced structure with multiple shape fits on the surface
中山A seal fitting structure at the position of well body and top cover
中山A reinforced structure with inner and outer diamond fit