With more than 10 years of technology expertise on alumina materials, Johncera has recently developed a series of high purity alumina grinding balls that solves your problems on both Cost and Purity.

The table shows several key differences between tra and specialty ceramics.

Johncera provides 99.7% corundum (alumina) crucibles with excellent thermal performance. Made by traditional slipcasting method. Available in various shapes and sizes. Checkout classic arc, boat, cylindrical, and rectangular corundum cr

Johncera provides 99.7% corundum (alumina) crucibles with excellent thermal performance. Made by traditional slipcasting method. Available in various shapes and sizes. Checkout classic arc, boat, cylindrical, and rectangular corundum cr