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Stepped-up walking assisting device
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Power assisting device for increasing walking and running speeds
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Running and walking assisting and accelerating apparatus
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Tandem combination wire rod
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Tandem combination electric pole
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Combined utility pole
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High-voltage electricity transmission equipment
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Production device and production process for preserved and spicy mustard
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Device for producing Chonglacai
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Interlock invisible asynchronous mechanical-electric-hybrid alarming antitheft lock
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