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[China]
Trade Verify
Address: Jidong Industraial Park, Qianbaihujian, Yangfang Town, Changping District, Beijing, China
Contact name:Tori
Yantai ZK Optics Co., Ltd. |
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Verified Suppliers
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| Density (g/cm3) | 2.203 |
| Modulus of Elasticity (MPa) | 7.25x104 |
| Poisson's Ratio | 0.17 |
| Compressive Strength (MPa) | 1150 |
| Tensile Strength (MPa) | 50 |
| Bending Strength (MPa) | 67 |
| Mohs Hardness | 5.5~6.5 |
| Micro Hardness | 8000~9000 |
Electrical Properties
| Dielectric constant (ε) | 0-106Hz | 3x1010Hz | |
| 3.7 | 3.81 | ||
| Dielectric strength in kV/cm | 20°C | 500°C | |
| 250-400 | 40-50 | ||
| Dielectric loss angle (tg δ) | 1KHz | 1MHz-109Hz | 3x1010Hz |
| <5x10-4 | <1x10-4 | <4x10-4 | |
| Resistivity in Ω·cm | 20°C | 100°C | 400°C |
| 1x1018 | 1x1016 | 1x1010 | |
| Resistivity in Ω·cm | 800°C | 1000°C | 1200°C |
| 6.3x106 | 1x106 | 1.3x105 | |
Company profile
Beijing Zhong Cheng Quartz Glass Co., Ltd. (short for ZCQ) founded in 1998, Beijing Zhong Cheng Quartz Glass Co., Ltd. (ZCQ for short) represents a high-tech supplier manufacturing quartz, optical glass, crystal glass products and molding tools located in Changping District, Beijing, China. Our main customers are from overseas countries and mainland China. ZCQ's products are widely in the lines of semiconductors, electronics, coating, laser, chemicals, medical treatment, spaceflight, optical resources, laboratory research, mechanical equipment and others.
We mainly supply:
1. Quartz Products
2. Optical Glass
3. Crystal Glass
4. Some plastic and metal molding tools
In Type 1 Quartz Glass, we are supplying:
a. Quartz discs, windows, flats, plates, rings, substrates, wafers, fringes, and panels: both in fine polishing, fine grinding or commercial polishing and grinding; in transparent, nontransparent or opaque statuses
b. CNC Quartz components and parts:
Through CNC design and software control, the Quartz parts can be precisely fabricated especially in doing arcs, slopes, slots, spheres, holes and cones, and taking 3D and angle processing in accordance with clients' own designs.
c. Quartz labware made by thermal treatment:
Tubing, apparatuses and various customer-designed labware can be made.
d. Sio2 Targets (Silicon Dioxide Sputtering Targets): as a thin film and composite coating material for vacuum coating:
Purity: Containing SIO2 of 99.95%-99.9999%
Characteristics: High Purity; Low Air Bubble Density; Low Impurity Content
Category: Grains, Wafers, Discs, Panels, Plates, Rings, and Blocks
In Type 2 and 3 Optical Glass, we are supplying:
a. BK7 glass
b. B270 glass
c. F-series glass
d. Float glass
e. CaF2 glass
f. Quartz Crystal
g. Optical Coating (AR, UV Filters)
h. Other various optical materials
Some typical products:
1. High Precision Windows
Dimension Tolerance: plus/minor 0.1mm ~ plus/minor0.01mm
Flatness: fringe ~ fringe /10
Surface Quality: 60/40 ~ 10/5
2. Ultra Thin Windows
Custom-Made Length / Width / OD by Thickness 1mm ~ 0.05mm
3. High Reflective Coating (HR), Anti-Reflection Coating, Protected Aluminum, and Protected Gold
In Type 4 molding tools, we are supplying:
Through CNC design and control, the metal and plastic molding tools and tooling fixtures for customers' mass production of their products, such as aluminum, copper, metal and others.
We welcome clients both in domestic and overseas markets to contact us for an inquiry and friendly collaboration!
