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Safety elevator door knife device with locking mechanism
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Steel belt wheel for elevator
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Novel elevator steel strip wheel
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Elevator lift car platform
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Elevator lift car platform welding tooling
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Radiation-resisting shielding patch used for geostationary orbit satellite
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Radiation shielding device
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Radiation shielding assembly for artificial satellite
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Anti-radiation shield plate used for space station
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Novel machine-room-less hanging bracket for elevator
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Counterweight housing for elevator
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Novel elevator rope head component
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Elevator compensation chain guiding device
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Tensioning wheel assembly of speed limiter
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Novel elevator car guide rail support
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Multifunctional paper extraction box
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Meat and bone cutting knife
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Watering pot with music player
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Insole
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Pen for recording, writing and time-telling
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