| http://www.w3.org/ns/prov#value | - When the amount is less than 4 parts by weight, the flex crack resistance tends to be inferior, and even if it exceeds 20 partsby weight, the flex crack resistance tends to be also inferior.Since it is the purpose of the rubber composition for a side wall of the present invention to utilize resources other than petroleum and it is preferable that an aroma oil is not used.Since it is the purpose of
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