Assertion: carbon black | /r/HasProperty | key ingredient
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text: Rs 30,000-crore non-tyre rubber industry is headed for a crisis with acute shortage and spiralling prices of carbon black , a key ingredient in the manufacture of rubber products.“The domestic prices of carbon black have risen nearly 60% in the last six months, with 30% increase coming in the last three months,’’ said Vikram Makar , senior vice president of All India Rubber Industries Association