Beijing Huamei Inc. CNPC

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Quantité totale PI 9
Rang # Quantité totale PI 175 566
Note d'activité PI 2,1/5.0    16
Rang # Activité PI 52 441

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Dernier brevet 2024 - Ultra-high temperature resistant...
Premier brevet 2020 - Blade cap force modulation syste...

Derniers inventions, produits et services

2022 Invention Ultra-high temperature resistant cement slurry system for cementing and preparation method and us...
Invention Ultra-high-temperature-resistant cement slurry system for well cementation, and preparation metho...
Invention Force modulation system for a drill bit. The force modulation system (10) for a drill bit include...
Invention Blade cap force modulation system for a drill bit. The force modulation system (10) for a drill b...
Invention Blade cap force modulation system for a drill bit. The force modulation system for a drill bit in...
Invention Force modulation system for a drill bit. The force modulation system for a drill bit includes a c...
Invention Force modulation system with an elastic force member for downhole conditions. The force modulatio...