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Occupational safety standards system. Respiratory protective devices. Filtering half masks against aerosols with additional protection against vapors and gases. General technical requirements. Test methods. Marking

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Yuft upper leather. Specifications

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Bronze and brass cast bars and tubes. Specifications

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Green (raw) coffee. Types of the defects

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Spreads and melted blends. General specifications

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Electrolytic cell for aluminium production. General specifications

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