Track url&colon
The track website link has been carried out the medium-frequency hardening treatment&comma which guarantees its greatest toughness and abrasion resistance&period
Observe bushing&colon
The bush is completed the carbonization and the floor medium-frequency quenching treatment&comma which ensures the reasonable hardness of main and abrasion resistance of inside and external surfaces&time period
Monitor pin&colon
The pin is completed the termpering and the floor medium-frequency quenching therapy&comma which makes certain the adequate hardness of main and abrasion resistance of exterior surfaces&period of time
