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From the world geogarphic distribution and exploitation of perlite, our mine either the lacation or the total ore reserves have absolute advantage! Our mine is located in the best perlite ore vein line in china, raw material is offwihite and dark grey. Offwhite perlite have good expansion coefficient and low furnace preheating temperature; grey perlite have high pressure coefficient and higher furnace temperature than that of offwhite. Our perlite ore have test by the third laboratory of Bureau of geology and minerals exploration in liaoning province, silica can reach more than 73%. http://www.perlite-xsy.com skype:albeewoo
