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classificationCode:"ipc:f16n"
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classificationCode:"ipc:f16l"
ABS magnetic ring combined sealing element of automobile hub unit
Sealing ring assembly for vehicle, vehicle and sealing performance detection method
PICP dry etching power-off helium leakage detection equipment
Sleeve type synchronous lifting assembly capable of sealing in place
Sheath penetrating device and sheath penetrating process for oval linear array