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Luban Prize (China national best quality prize)
Luban Prize (China national b
Luban Prize (China national best quality prize)
Luban Prize (China national b
AAA-class Credit Enterprise
AAA-class Credit Enterprise
Perspective Ruler invention patent
Perspective Ruler invention p
 plaster trowel patent certificate
plaster trowel patent certif
 formwork for openings reserved for pipes at slab
formwork for openings reserv
safety helmet with communication function patent certificate
safety helmet with communicat
concrete-mixer feeding device patent certificate
concrete-mixer feeding device
Pipeline fixing clamp patent certificate
Pipeline fixing clamp patent
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