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Multifunctional, efficient and environmentally friendly heavy oil contamination detergent
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Novel efficient and environment-friendly aqueous cleaning solution for engines
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Multifunctional, efficient and environmentally friendly heavy oil contamination detergent
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Atomic energy induction generator
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Plasma induction generator
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Single-phase transformer and similar device
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Scale type four-rod full-balance long-stroke oil pumping machine
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Cable-free balance long-stroke oil pumping unit
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Magic cube for training and corner changing recovery method thereof
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Rubik's cube and method of edge changing and restoring thereof for training
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Preparation for improving fruit setting rate of tomato and preparation method of preparation
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Box-type wind turbine generator
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Double-balance oil extractor
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A parallel mechanism in laser processing process
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A cascade mechanism in laser processing process
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Bone-setting pill 'Jiegudan'
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Fully automatic boiler for service of cold and hot water with energy saving and health care features
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