Siteng Optics & Electrical | Premium Infrared Optical Components & Vacuum Coating Sensors

About Siteng Optics & Electrical

Tangshan Siteng Optoelectronics Technology Co., Ltd. was established in 2020 as a subsidiary of Tangshan Wanshi and Electronics Co., Ltd., a high-tech enterprise founded in September 2003. We specialize in vacuum crystal sensors, film thickness monitoring quartz crystals, and advanced optical coating products.

By 2017, our parent company had captured approximately 40% of the Chinese market with our leading products. We have received international technical support and established a professional R&D center with patented non-proprietary technology in vacuum monitor crystals and sensors.

40%

Market Share in China (2017)

20+

Years of Industry Experience

2020

Founded as Subsidiary

Our Product Range

Long-Wave Infrared Metalized Windows

High-performance LWIR windows with metalized coatings for optimal reflectivity and durability in demanding environments.

• Enhanced infrared transmission
• Durable metalized coating
• Customizable substrate materials

Silicon Window (Front Closed Type)

Precision-engineered silicon windows ideal for infrared applications requiring high thermal conductivity and low density.

• High transmission in 1.2–7 μm range
• Excellent thermal shock resistance
• Front closed type design

Germanium Window (Front Close Type)

Germanium optics optimized for 8–14 μm infrared applications with high refractive index and excellent optical properties.

• Ideal for thermal imaging systems
• High refractive index (4.0)
• Front close type construction

Infrared Sensor Wafer Packages the Window

Integrated wafer-level packaging solutions for infrared sensors with hermetic sealing and optical window integration.

• Wafer-level packaging technology
• Hermetic sealing for reliability
• Customizable window materials

Metallic Film Sample

Metallic Film (Welded-type Thin Film)

High-reflectivity metal reflective films including aluminum, gold, and silver coatings for optical and IR applications.

• Welded-type thin film construction
• Metal reflective film options
• High adhesion and durability

Optical Thin Films

Other Optical Thin Films

Custom optical coatings including penetration films, reflection films, bandpass filters, and close filters.

• Customer-specified spectral characteristics
• Various substrate types and sizes
• High surface quality standards

IR Windows

Broad range of infrared-transparent windows for sensors, detectors, and thermal imaging systems.

• Multiple material options
• Anti-reflective coating options
• Custom dimensions available

LGS Sensor Crystal

LGS Sensor Crystal Oscillator

Precision LGS (Langasite) crystal oscillators for high-temperature sensor applications with excellent stability.

• High-temperature operation
• Excellent frequency stability
• Low aging characteristics

Film Thickness Monitor

Film Thickness Crystal Oscillator

Quartz crystal sensors for precise monitoring of thin film deposition thickness in vacuum coating processes.

• High sensitivity and accuracy
• Real-time thickness monitoring
• Compatible with various materials

Optical Glass

High-quality optical glass substrates for lenses, prisms, and other precision optical components.

• Various glass types available
• Precision polishing options
• Custom cutting and shaping

Infrared Substrate

Infrared Polished Substrate

Precision-polished substrates for infrared applications requiring high surface quality and low scatter.

• Low surface roughness
• High parallelism
• Multiple IR materials available

Filter Components

Filter

Specialized optical filters including bandpass, longpass, shortpass, and notch filters for various applications.

• Narrow and wide bandpass options
• High transmission in passband
• Custom spectral specifications

Latest News

Aug. 20, 2021

Company Milestone

Tangshan Wanshi and Electronics Co., Ltd., founded in September 2003, continues to lead in vacuum crystal sensor technology.

Aug. 18, 2021

Siteng Optoelectronics

Tangshan Siteng Optoelectronics Technology Co., Ltd. advances infrared optical component manufacturing capabilities.

Aug. 17, 2021

Technology Development

Ongoing R&D investments strengthen our position in film thickness monitoring quartz crystal technology.

Aug. 16, 2021

Company Profile

Tangshan Siteng Optoelectronics Technology Co., Ltd. Company Profile released with expanded capabilities.

Get in Touch

Contact our team for product inquiries, technical support, or partnership opportunities.

Contact Information

Phone: +86 315 6121 218

Emergency: +86 138 3893 3595

Email: lisazhang@126.com

Email: lisa@wanshihe.com

Location: South East Road, Linnancang Country, Yutian Town, Tangshan City, Hebei Province, China

Business Hours

Monday - Friday: 8:00 AM - 6:00 PM (China Standard Time)

Saturday: 9:00 AM - 2:00 PM (Emergency Service Only)

Sunday: Emergency Service Only

24/7 Emergency Service Available

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