majority (about eighty percent) of platinum is mined in south africa. approximately ten % is mined in russia, along with the rest is present in north and south america. because platinum along with platinum group metals (pgm) metals usually aren't seen in large amounts, they are generally by-products from...
. it is used as filling reinforcing agent to improve the hardness, aging-resistance, wear-resistance, tear strength and tensile strength of rubbers. has excellent thermo plasticity and electrical insulating property. high styrene rubber is suitable for the manufacture of high-hardness and low-density...
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