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Process & Technology

Production Facilities
Chonghong has experienced techhnologies and unique equipment for sapphire Al2O3 production in China.
We use optical grade material (Al2O3 99.997%) using high purity aluminum oxide as raw material.
We carry out the following production stages:

Mechanical polishing


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

Both 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 industries.


Major devices we are using,please take a look of the pitcure

Automatic laser drilling devices, High technical carving and milling machine are the most advanced devices
we are using so far.



  • Tel:+86 23 89119132
  • Fax:+ 86 23 89119130
  • Mobile:+86 23 89119132
  • Email: sales@ch-microtek.com
  • add:Rm. 2007, Huachuang Building, No. 10, Honghuang Road, Jiangbei District, Chongqing, China