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Gel plugs and pigs for pipeline use
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Composition of wellbore cleaning agent
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수성 작용유체 조성물
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一种紧固型金属管钻孔机
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Wetting agents for concrete cleaning and adhesives
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수성 코팅 조성물
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Mono-substituted dialkanol piperazines
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Dry cleaning detergent composition
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Improved machine for turning irregular forms
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Un procedimiento para la preparaciën de compuestos de quinazolona
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