өнхрөх тээрмийн үйлдвэр
өнхрөх тээрмийн үйлдвэрлэл Rolling trill үйлдвэрт зориулсан холхивч In the metallurgical industry, rolling mill bearings work under heavy loads, vibration shock loads, high temperatures, water vapor, and dusty environments, and the working conditions are very harsh.