China Railway Erju 4th Engineering Co., Ltd.

Chine

Commandez votre montre hebdomadaire China Railway Erju 4th Engineering Co., Ltd.
Quantité totale PI 4
Rang # Quantité totale PI 390 146
Note d'activité PI 0,9/5.0    2
Rang # Activité PI 475 864

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Dernier brevet 2021 - Imprinting material, and roughen...
Premier brevet 2020 - Method for excavating tunnel shaft

Derniers inventions, produits et services

2020 Invention Imprinting material, and roughening construction method for new and old concrete joint surface. D...
Invention Grouting pipe and method of reinforcing tunnel by surface grouting. A grouting pipe and a method ...
Invention Method for construction of shaft lining. A method for construction of a shaft lining. A hanging s...
Invention Method for excavating tunnel shaft. A method for excavating a tunnel shaft (1), by drilling a num...