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A high-strength and high toughness polypropylene barrier material and its preparation method
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A red mud cross-linked polyethylene composite material for pipes
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A flame retardant containing DOPS phosphazene structure, its preparation method and application
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A method and system for analyzing the health status of manhole covers based on distributed sensors
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A method and system for identifying hazardous areas based on underground liquid level monitoring
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Compression type packer sealing cylinder for oil and gas fields
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A biaxially oriented polyvinyl chloride pipe for power use
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PVC drainage pipe fittings joint
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Square wave tube (reinforced rib)
