Our company has solved the eccentricity error of Ta and Nb tubes. We can control the tolerance of wall thickness within 5％. 

As a factory specialized in tantalum and niobium products, we Changsha South Tantalum Niobium Co.，Ltd support ending the violence and human rights violations in the mining of certain minerals (gold, as well as tin,tantalum and tungsten,derivatives of cassiterite,columbite-tantalite and wolframite)from a location described as the“Conflict Region”,which is situated in the eastern portion of the Democratic Republic of the Congo(DRC)and surrounding countries.We fully support the CFS program proposed by EICC-GESI.