ቢፒአይ
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BPI ASTM D6400 ለ D300 - 03
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BPI ASTM D6400 ለ C200 - 01
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BPI ASTM D6400 ለ C200 - 02
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BPI ASTM D6400 ለ D200 - 01
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BPI ASTM D6400 ለ D200 - 02
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BPI ASTM D6400 ለ D300 - 01
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BPI ASTM D6400 ለ D300 - 02
