China Germanium Co., LTD. (CNGE) was founded in May 1960, previously Nanjing "718" factory of the former ministry of metallurgical industry, and was the one of national key construction unit during the "first five-year" period. The factory is located at Lishui economic development district, Nanjing. In 2012, CNGE has had a major assets restructuring with Susino and it is now a new material branch of the Group. The company is a professional new material technology enterprise engaged in R&D, production, sales and recycling of rare metal "germanium" as the core and other advanced high-end infrared optical materials, optical components and other High-Tech materials. Products are widely used in aerospace, solar photovoltaic, infrared field, laser, electronic communications, security camera, automobile, medical treatment, fire protection, industry and other fields. With the help of advanced technology and perfect management system, CNGE has serviced many customers with "full series" industry integration services at home as well as abroad about the advanced and high-end new materials with rare metals as the core.CNGE now has several advanced, highly intelligent and perfect production lines for related products, of which the output and quality of germanium products are particularly prominent in the global market. The company has strong technical strength, advanced technology and equipment, and has more than 100 sets of leading equipment in the global market as a global market leader with strong competitive edge. Today, the company has more than 20 advanced patent technologies with independent intellectual property rights, with over 300 employees. Also, we have High tech talents and professional R & D team composed of a number of workers with degree of Ph.D., master and bachelor as well as more than 20 engineering and technical personnel.Our sales market spread all over the five continents with strong technical strength, leading equipment advantages, stable and excellent quality, excellent product cost-effectiveness as well as good pre-sale / in-sales / after-sales service. The company has hold ISO9001:2015 quality management system certification and ISO14001:2015 environmental management system certification. Moreover, CNGE has reach the Class 3 standard of safety production standardization for Nanjing city. By using our good performance in quality, environmental protection and safety, we sincerely delicate to create value for our customers.
No.9, Zhongxing East Road, Lishui Economic Development District, Nanjing City, Jiangsu Province, China
No. of Production Lines
Above 10
Contract Manufacturing
OEM Service OfferedDesign Service OfferedBuyer Label Offered
Annual Output Value
Above US$100 Million
Annual Production Capacity
Product Name
Production Line Capacity
Actual Units Produced(Previous Year)
Verified
Wafers
confidential
confidential
Optics
confidential
confidential
Semiconductor
confidential
confidential
Materials
confidential
confidential
IR Zoom Sights
confidential
confidential
Verified
QUALITY CONTROL
QUALITY CONTROL
Test Equipment
Machine Name
Brand & Model NO
Quantity
Verified
confidential
confidential
confidential
Verified
R&D CAPACITY
R&D CAPACITY
Certification
Picture
Certification Name
Issued By
Business Scope
Available Date
Verified
ISO9001
CESI
The production and service of germanium series products
2018-09-05 ~ 2021-10-11
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ISO14001
ESI
The production, service and management activities of germanium
2018-09-05 ~ 2021-10-01
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Verified
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Patents
Picture
Patent No
Patent Name
Patent Type
Available Date
Verified
ZL201721697130.0
A chamfering device for conical germanium granule
UTILITY_MODEL
2017-07-05 ~
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ZL201520949518.X
a solar germanium wafer surface detection platform
UTILITY_MODEL
2016-04-19 ~
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ZL201520949982.9
A suspension crucible bracket for solar germanium single crystal growth
UTILITY_MODEL
2016-04-18 ~
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ZL201720152327.X
A water boiling degumming device for single crystal wafer
UTILITY_MODEL
2017-12-03 ~
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ZL201720507979.0
An ETV auxiliary measuring tool
UTILITY_MODEL
2018-01-04 ~
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ZL201720152288.3
fixture of a silicon wafer chamfer small radian round angle
UTILITY_MODEL
2017-10-25 ~
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ZL201510828457.6
A method of cleaning packaging box of solar germanium wafer
INVENTION
2017-08-23 ~
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ZL201310179318.6
A grinding method for germanium substrate of solar cell
INVENTION
2016-06-20 ~
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ZL201610151254.2
A method for removing residual reagents from polishing of solar germanium single crystal
INVENTION
2018-03-11 ~
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ZL201310379495.9
A method of recycling purification and recovery of germanium containing granular wastewater
INVENTION
2014-09-08 ~
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Verified
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Awards Certification
Picture
Name
Issued By
Start Date
Description
Verified
Jiangsu postdoctoral program
Department of human resources and social security of Jiangsu Province
2016-10-11
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Nanjing Engineering Technology Research Center
Nanjing Science and Technology Commission
2016-08-23
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2015 science and technology innovation advanced enterprise
Lishui District Committee of the Communist Party of China, Nanjing and Nanjing Lishui District People's Government
2016-02-09
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2016 science and technology innovation advanced enterprise
Lishui District Committee of the Communist Party of China, Nanjing and Nanjing Lishui District People's Government
2017-02-16
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Science and technology smes in Jiangsu Province
Nanjing Lishui District Science and Technology Bureau
2014-11-03
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Star Enterprise of Jiangsu Province
Jiangsu Quality Supervision and Administration Commission and Jiangsu Enterprise integrity Investigation and Evaluation Committee
2016-10-11
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Nanjing Lishui District Safety Production Association Vice President Institution
Nanjing Lishui District Safety Production Association
2013-05-07
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Verified
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Research & Development
41 - 50 People
TRADE CAPABILITIES
TRADE CAPABILITIES
Main Markets & Product(s)
Main Markets
Total Revenue(%)
Main Product(s)
Verified
Domestic Market
25.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
North America
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Eastern Europe
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Eastern Asia
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Western Europe
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Northern Europe
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Southern Europe
10.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Southeast Asia
5.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Mid East
5.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
South Asia
5.00%
Wafers; Optics; Semiconductor; Materials; IR Zoom Sights
Verified
Trade Ability
Language Spoken
English
No. of Employees in Trade Department
6-10 People
Export License Registration NO
01843028
Total Annual Revenue
confidential
Total Export Revenue
confidential
Business Terms
Accepted Delivery Terms
FOB, CIF, Express Delivery
Accepted Payment Currency
USD, EUR, CNY
Accepted Payment Type
T/T, L/C, Western Union, Escrow
Nearest Port
Shanghai
Product Information
Brand：
none
Address：
China
Min.Order：
none
Supply：
none
Valid until：
Long Term
Product Details
Product Show
Product Parameters
Physical Properties
Germanium
Density
5.325/cm3
Hardness
800kg/cm2
Young's Modulus(Gpa)
100
103.3
110
138
111
155.5
Thermal Conductivity
59.9
Thermal Expansion Coefficient
6.0 x10-6
Specific Heat Capacity
322
Dielectric Constant
16
Melting Point
937.4℃
Crystal Structure
Monocrystalline 1 Polycrystalline
Purity
>99.999%
Conductivity Type
N
Resistivity
0.005-50 Ω • CM
Poisson's Ratio
0.278
Modulus of Rupture ( Mpa)
72.4
Surface Finish
Ramax 0.2 μm to 4.0 μm
Optical Properties
Germanium
Transmission Spectrum, ( μm)
2-14 μm
Temperature Coefficient of Refractive Index
400x10-6
Refractive Index
4.0052
Refractive Index Homogeneity
≤1.0+10-4
Absorption Coefficient @ 10.6 μm
≤0.035
Transmittance
Resistivity
Wavelength Range
Transmittance
1.1-1.3 Ω
2-11.5 μm
43.92%-46.47%
1.3-1.6 Ω
2-11.5 μm
44.40%-47.54%
1.4-1.5 Ω
2-11.5 μm
44.31 %-46.22%
2.9-3.3 Ω
2-11.5 μm
44.69%-46.25%
3.0-3.8 Ω
2-11.5 μm
45.31 %-46.73%
4.4-4.8 Ω
2-11.5 μm
44.64%-46.52%
7.0-19 Ω
2-11.5 μm
45.20%-46.20%
17.7-17.9 Ω
2-11.5 μm
46.08%-46.70%
Silicon
24-32 Ω
/
51.19%-52.11%
38.2-38.9 Ω
/
52.48%-53.71%
Formats/Sizes/Tolerances （mm)
Ge Disks
Diameter
Mono Crystal
3-320
Poly Crystal
3-400
Diameter Tolerance
≤ 0.05
Minimum Thickness
0.3
Maximum Thickness
75
Thickness Tolerance
≤0.05
Ge Rectangular
Maximum Size
250x250
Tolerance
0.1
Minimum Thickness
0.1 (Φ < 100 )
Thickness Tolerance
0.02
Ge Lenses
Diameter
7-360
Diameter Tolerance
0.04
The Radius of Curvature Tolerance
Δ Sag < 0.005
Center Thickness Tolerance
≤ 0.03
Edge Thickness Variation (ETV)
≤0.03
Properties
Germanium belongs to the first Ⅳ main group elements with the structure of the diamond. Germanium have excellent physical and chemical properties, its main applications in semiconductor materials, infrared optical materials, chemical catalyst, medical applications and other fields, especially used as a kind of excellent infrared optical material.
High purity germanium has a high refractive index and is high transparency to infrared radiation. It can not pass through visible and ultraviolet ray.
Germanium has excellent transmission across 2-14um waveband and can be used in both mid-wave infrared and long-wave infrared systems.
When Germanium is used as an infrared material, it can be produced to Optical Grade Germanium blank, windows, lenses which is used in Infrared detection and imaging system
Application
Germanium Single crystal products include solar grade germanium single crystal, infrared grade germanium single crystal and detector grade germanium single crystal.
Infrared grade Germanium single crystal is most widely used infrared optical lens and infrared optical window which protect infrared optical lens in thermal-imaging systems.
60% of middle and low infrared optical lenses and 50% of high-end infrared optical lenses are made by Germanium single crystal. Germanium materials are widely used in infrared lenses.
Civil infrared window is mainly used in a variety of monitoring thermal imager, night assistance pilot. The civil domain mainly uses in the security, the civil vehicle, the civil vessel, the civil aircraft and so on.
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