A cikin 'yan shekarun nan, tare da m amfani da graphite molds, shekara-shekara amfani da gyare-gyaren darajar a cikin inji masana'antu ne sau 5 na jimlar darajar kowane irin na'ura kayan aikin, da kuma babbar zafi asarar shi ma ya saba wa data kasance makamashi. -Ajiye manufofin a China.A babban amfani ...
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