Diffusion & Furnace High thermal-shock resistance, low devitrification rate, suitable for chemical piping and high-temperature furnace liners.
Workshop Blank Uniform wall thickness and exceptional optical clarity, tailored for secondary glassblowing, custom reshaping, and flanging.
Pressure Sight Glass High pressure tolerance and acid/alkali inertness for petroleum, chemical reactors, and hydraulic inspection windows.
Heat Resistant Continuous heat endurance up to 1,100 °C with zero distortion, making it ideal for biomass heaters and industrial kilns.
Laboratory Grade High SiO2 content (≥99.99%) ensures contamination-free handling in chemical digestion and academic analytical workflows.
High Transmittance Broad spectral transmission from UV across visible to near-infrared spectrum, fine ground and polished to 60/40 or 40/20.
UV Grade High laser damage threshold and minimal thermal lensing, used in high-power fiber laser cutting heads and UV exposure units.
Semiconductor Grade Ultra-smooth surface roughness (Ra < 0.5nm) and strict dimensional tolerances for microelectronic wafer processing.
Ultra-High Purity Manufactured from select ultra-pure quartz sand with metallic impurity limits ≤20ppm, eliminating alkali migration risks.
Photomask Substrate Sub-micron flatness and near-zero coefficient of thermal expansion for photolithography mask blanks and precision gratings.
Boiler Level Gauge Resistant to high-pressure steam cavitation and extreme temperature swings without micro-fracturing or losing clarity.
UHV Viewport Low helium permeation and ultra-low outgassing under ultra-high vacuum (UHV) conditions, compatible with CF and ISO flanges.
Observation Window Heavy-wall fused silica blanks ground and beveled to prevent edge chipping in supercritical fluid reaction vessels.
Flanged Disc Available in customized round discs or rectangular strips with polished inspection faces and fire-polished edges.
Plasma & Etch Engineered to endure corrosive plasma chambers, CVD equipment, and harsh etching chemistries without surface fogging.
Optical Flat Surface flatness within λ/4 to λ/10 per inch, with parallel tolerance ≤ 30 arc seconds for metrology and laser testing.
VEZLO Quartz Products Co., Ltd. is strategically based in Donghai County, Jiangsu Province — widely recognized as "China's Quartz Center" due to its rich mineral reserves and deep industrial heritage. Spanning an operational area of 50 mu (approx. 33,000 m²) with fixed assets exceeding RMB 10 million, our integrated facility specializes in drawing, machining, cutting, and flame-working high-grade fused quartz glass products.
Our solutions serve diverse global sectors, including electric light sources, UV germicidal systems, corrosive chemical piping, telecommunication optical preforms, industrial heating apparatus, and semiconductor fabrication equipment. Core manufactured items include transparent fused quartz tubing ranging from 2 mm to 500 mm in diameter, along with our advanced 520 mm large-diameter tube developed for next-generation semiconductor oxidation and diffusion furnaces.
Demonstrating technical leadership, our 320 mm high-purity quartz tube for large-scale integrated circuits (VLSI) was supported as an official Jiangsu Provincial Science and Technology Support (Industrial) Project. Furthermore, VEZLO continues to invest over RMB 5 million annually into research and product engineering, expanding industrial capacity for 14-inch-plus wafer processing components and exporting worldwide to Germany, the United Kingdom, the United States, France, Russia, and East Asia.
Send your drawings, operating temperatures, and dimensional tolerances to our engineering team for a detailed quotation within 2 hours.