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Root canal negative pressure suction nozzle
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Cleaning device and using method
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Puncture sheath
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Multifunctional catheter and preparation method thereof
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Screw bottle
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Woven film, woven bag and weaving method
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Essence, preparation method and facial mask
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Preparation method of degradable joint balloon
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Interface screw
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Cell culture substrate
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Artificial cornea and preparation method thereof
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Pushing device for lacrimal passage drainage tube
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Pushing device for lacrimal passage drainage tube
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Visible esophagus ultrasonic guiding device capable of realizing electromagnetic bending adjustment
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Noninvasive orthopedics external fixation support capable of automatically adjusting bone section spacing
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Preparation method of degradable balloon and balloon prepared by using preparation method
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Vertebral body expansion device and using method
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