... : high precision,high speed,vacuum,fixed anode X-ray tube,high temp,low temp,electric insulation ... for high precision,high speed,vacuum,fixed anode X-ray tube,high temp,low temp,electric ... acid,alkali,salt,measure pumps,flowmeter and valve ball plunger for deep well pump. Characterisitic: resistance ... food processing equipments industrial and so onDeep groove ball bearing models as follows: 619/3628/4619 ...