... , bar, sheet,boat,crucible and so on. Specification:99%Density:≥18.6g/cm³Size:50mm - 100mm Company Profile 1. mainly produce high purity ... 99.999% purity and molybdenum,tantalum parts3. suppliers for national high-performance aircraft engine research, and scientific institutes in aerospace and ... element supplier of mega aircraft engine manufacturers as Rolls Royce high density tungsten rod