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A kind of pinion frame
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Powder metallurgy material for manufacturing gear
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Special material for powder metallurgy gear case
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High-strength powder metallurgical gear material
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Abrasion-resistant powder metallurgical gear material
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Powder metallurgy gear material
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Novel special material for powder metallurgy gear case
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Carrier type powder metallurgy material lubricating agent and preparing method thereof
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Powder metallurgy gear case material
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Powder metallurgical abrasion-resistant gearbox material
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Lubricant for powder metallurgy
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Powder metallurgy gear material
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Lubricating agent for powder metallurgy gear
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Novel powder metallurgy gear material
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High-strength wear-resistant powder metallurgy gear case material
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Novel powder metallurgy gear case material
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High-strength wear-resistant powder metallurgy gear material
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Special material for powder metallurgical gear
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