has experienced techhnologies and unique equipment for
sapphire Al2O3 production in China.
grow optical grade material (Al2O3 99.997%) using high
purity aluminum oxide as raw material.
carry out the following production stages:
Chonghong implements mainly Flame Fuse and CZ crystal
growing method, that allows to manufacture sapphire
boules up to 50 mm diameter.
Due to the unique technology of raw material (Al2O3
powder) preliminary preparation Chonghong is able to
offer the purest (99,997%)
Our company employs advanced technology and equipment
for crystal slicing:
wire-sawing for sapphire window slicing
-- sawing for optical parts and watch glass blanks slicing
techniques allow Chonghong to choose the most effective
method for each application. Fully automatic wire saws
enable us to cut sapphire substrates very precisely
according to customers' specification.
Our company offers precise grinding and lapping and
has developed a proprietary process to achieve minimal
material stress and higher yield for final processor.
We are capable to achieve perfect flatness and total
thickness variation and specialize in tight tolerances.
Chonghong offer high quality, high precision optical
polishing of sapphire products, used in a variety of