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