... Manganese,40 Chromium and 45#steel etc .4,Every parts of our products that pins ,axles,sleeves etc are strictlyobey ... quenching and tempering procedures .5,Every parts of our products strictly conforms to the procedurerequirements : mill ,plane ... .( 8 ) Driver cab : With arc space capsule , toughened glass , widefield of vision , clear and safe ,auto wiper, air conditioner.( 9 ...