Import Fused Silica Window — Buy in wholesale FOB from Supplier in China

Changchun Sunday Optoelectronics Co., Ltd manufactures fused silica windows for precision laser and imaging systems. The windows are supplied in diameters ranging from 0.1 mm to 1000 mm with a diameter tolerance of ±0.02 mm. Available substrate materials include UV‑grade fused silica, BK7, sapphire, ZnS₂, CaF₂, silicon and germanium. All units are finished to a surface quality of 10‑5 standard and a flatness of 1/10 lambda.

Fused silica provides superior thermal stability and low expansion, making it the preferred choice for high‑power laser applications, while BK7 offers a cost‑effective alternative for systems where budget constraints dominate. The supplier’s four‑axis polishing and large‑size ring polishing equipment enable production of large‑area plates up to 600 mm full aperture with Zygo interferometer flatness verification. Typical industry practice also offers anti‑reflection coatings to reduce Fresnel losses, although the listing does not specify a coating. Standard handling includes double‑wall foam crates with anti‑static inner bags to protect the optical surface during transport.

These windows are commonly integrated into industrial laser cutters, semiconductor lithography tools and scientific research instruments, and are purchased by OEMs, system integrators and research laboratories. Changchun Sunday Optoelectronics can provide 24‑inch Zygo flatness reports and full‑aperture CA 600 mm windows on request. Trade terms such as minimum order quantity, Incoterms and payment schedule are not disclosed in the listing and should be confirmed directly with the supplier. Prospective buyers should also verify the supplier’s response capability given the reported response rate of 0 %.

Changchun Sunday Optoelectronics Co., Ltd is located at No 9576 Donghuan Road, Changchun, 130000, China. The company focuses on the processing of precision optical windows and operates a four‑axis polishing machine, a large‑size ring polishing system and a two‑axis grinder for high‑accuracy fabrication. Its product portfolio includes windows made from fused silica, BK7 and other optical materials, all finished to tight flatness and surface‑quality specifications. The supplier is listed under the harbor trust tier, indicating a verified business status on the platform.

The current listing highlights the ability to produce windows with diameters from 0.1 mm up to 1000 mm and offers Zygo flatness reporting for up to 24‑inch apertures. No explicit information on minimum order quantities, lead times, payment conditions or certification status is provided, so interested buyers must request those details directly. The supplier’s average response time is recorded as zero hours, suggesting that response data is not available at this moment.