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2003: Established DongCheng STRON 
Machinery Parts Shop in Dongguan city        
2004: STRON Material (Hong Kong) 
Trading Co.  was registered  in Hong 
Kong. In the same year,  gained import 
& export license  from China  government. 

  Products → ZnSe

Optical Coating Materials
Optical Governance Tool
Optical Crystal
Coating Equipment Parts
Optorun coating equipment


  Transmission Range 0.6 to 21.0 microns
  Refractive Index 2.4028 at 10 microns
  Reflection Loss 31.11% at 10.6 µm (2 surfaces)
  Index of Absorption 0.0005 cm-1 at 10.6 microns
  Restrahlen Peak 45.7 microns
  dN/dT +61 x 10-6/°C at 10.6µm at 298K
  dN/dµ = 0 5.5µm
  Density 5.27 g/cm3
  Melting Point 1525°C (dissociates about 700°C)
  Thermal Conductivity 18 Wm-1K-1 at 298K
  Thermal Expansion 7.1 x 10-6/°C at 273K
  Hardness Knoop 120 with 50g indenter
  Specific Heat Capacity 339 J kg-1K-1
  Young's Modulus (E) 67.2 GPa
  Bulk Modulus (K) 40 GPa
  Apparent Elastic Limit 55.1 MPa (8,000psi)
  Poisson Ratio 0.28
  Solubility 0.001 g/100g water
  Molecular Weight 144.33
  Class/Structure HIP polycrystalline cubic, ZnS, F43m

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Copyright © Dongguan Stron Optics Technology Co., Ltd.  TEL:0769-22607473  FAX:0769-22259370
ADD:No1801,1816 in Building 3 of GrapeManor.No9 of JinAo road Xincheng community Wanjiang district Dongguang city