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