Qingdao First Municipal Engineering Co., Ltd

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Quantité totale PI 4
Rang # Quantité totale PI 390 110
Note d'activité PI 1,1/5.0    3
Rang # Activité PI 345 401

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Dernier brevet 2021 - Method of treating tunnel collap...
Premier brevet 2020 - Method of treating tunnel collap...

Derniers inventions, produits et services

2020 Invention Method of treating tunnel collapse using pavilion support. A method of treating tunnel collapse i...
Invention Method of treating tunnel collapse with roof-contacted shield support. A method of treating tunne...
Invention Method for treating tunnel collapse by using pavilion-type support. A method for treating tunnel ...
Invention Method for treating tunnel collapse by using roof-contacted shield plate support. A method for tr...