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Ten new manufacturers
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Science and technology progress third prize
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Low calorific value gas fuel burner patent certificate
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High speed combustion heating device patent certificate
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Drum machine patent certificate
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Sandwich type automatic burner patent certificate
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The intermittent semi-automatic machine patent certificate
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Automatic donut machine patent certificate
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Fried food system patent certificate
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Cooking oil heating device patent certificate
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Water and oil mixture Fried machine patent certificate
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The new high-speed burner patent certificate