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