# FGQuartz > Custom Fused Silica Parts, Made to Your Drawing ## Pages - [Solar Photovoltaic Quartz](https://fgquartz.com/applications/solar-photovoltaic-quartz/): Quartz glass is used across solar cell manufacturing: crucibles for CZ, MCZ, and DS silicon crystal growth, process tubes and wafer boats for diffusion, and liners, carriers, paddles, and fixtures for deposition and other thermal steps. - [Semiconductor Quartz Glass](https://fgquartz.com/applications/semiconductor-quartz-glass/): Semiconductor front-end processing runs wafers through high-temperature and chemical steps under strict contamination limits. - [Optical Quartz Glass](https://fgquartz.com/applications/optical-quartz-glass/): Optical fused silica (quartz glass) is specified when a system must transmit from the deep ultraviolet into the infrared, hold its figure through temperature change, or survive high-power light. - [Laboratory Quartz](https://fgquartz.com/applications/laboratory-quartz/): Laboratories use fused silica (quartz glass) wherever ordinary lab glass, porcelain, or plastic cannot take the temperature, the chemistry, or the blank requirement: ashing and calcination, trace-element sample preparation, hot-acid digestion, UV spectroscopy, and high-temperature synthesis. - [High Temperature Quartz](https://fgquartz.com/applications/high-temperature-quartz/): High-temperature quartz is fused silica used where ordinary glass softens or cracks: furnace and tube-furnace tubes, liners, heating-element supports and insulators, observation windows, thermocouple protection tubes, and structural parts. - [Fiber Optic Quartz](https://fgquartz.com/applications/fiber-optic-quartz/): Optical fiber begins as a fused silica preform, and the quartz components that make it must meet the same purity and dimensional standard as the fiber. - [Applications](https://fgquartz.com/applications/): FGQuartz manufactures high-purity fused silica (SiO₂ ≥ 99.99%) components for six industries where material purity, thermal stability, and dimensional control directly affect process yield: semiconductor, solar photovoltaic, optics and photonics, laboratory and scientific, fiber optic, and high-temperature industrial processing. - [Quartz Cold Processing](https://fgquartz.com/products/custom-quartz-glass/quartz-cold-processing/): Quartz cold processing, also called quartz CNC machining or diamond machining, is the subtractive route for fused silica. - [Quartz Thermal Processing](https://fgquartz.com/products/custom-quartz-glass/quartz-thermal-processing/): Quartz thermal processing, often called flame working or quartz glassblowing, uses controlled oxy-hydrogen flames to soften fused silica so it can be permanently bent, formed, welded, blown, or sealed without introducing contamination. - [Custom Quartz Glass](https://fgquartz.com/products/custom-quartz-glass/): Custom quartz glass fabrication is the manufacture of high-purity fused silica components to a customer CAD drawing, dimensioned sketch, or sample, rather than from a fixed catalogue of sizes. - [Quartz Boat](https://fgquartz.com/products/quartz-boat/): A quartz wafer boat — also called a quartz boat or wafer carrier — is a high-purity fused silica carrier that holds semiconductor or solar wafers upright and evenly spaced inside a furnace tube during diffusion, oxidation, LPCVD, and annealing, without introducing metallic contamination. - [Quartz Crucible](https://fgquartz.com/products/quartz-crucible/): A quartz crucible — also called a fused quartz crucible or fused silica crucible — is a high-purity fused silica vessel used to hold, heat, and melt materials at high temperature with minimal contamination. - [Quartz Glass Plate](https://fgquartz.com/products/quartz-glass-plate/): Quartz glass plates — also sold as quartz glass sheets, fused silica plates, discs, and optical windows — are flat fused silica components used as process covers, viewports, optical windows, substrates, and high-temperature shields. - [Quartz Glass Rod](https://fgquartz.com/products/quartz-glass-rod/): Quartz glass rods — also called fused silica rods or fused quartz rods — are solid fused silica cylinders used as structural supports, boat and rack rails, chemically inert stirring rods, optical fiber preform target (starting) rods, and fixtures in high-temperature furnaces. - [Quartz Glass Tubes](https://fgquartz.com/products/quartz-glass-tubes/): Quartz glass tubes — also called fused quartz tubes, fused silica tubes, or quartz tubing — are high-purity amorphous SiO₂ cylinders used as furnace tubes, process chambers, CVD liners, reaction tubes, and high-temperature conduits where borosilicate glass cannot take the heat and metal would contaminate the process. - [Quartz Inline Heaters](https://fgquartz.com/products/quartz-inline-heaters/): A quartz inline heater — also called a quartz flow-through heater or quartz circulation heater — heats a process liquid or gas as it flows through a chamber made of high-purity fused silica. - [Quartz Tanks](https://fgquartz.com/products/quartz-tanks/): Quartz tanks — also called quartz baths, quartz cleaning tanks, or quartz wet-bench tanks — are welded fused silica vessels used for wet cleaning, acid etching, rinsing, and high-purity chemical holding. - [Products](https://fgquartz.com/products/): What does FGQuartz supply? - [Quartz Glass FAQ](https://fgquartz.com/quartz-glass-faq/): 59 straight answers about quartz glass (fused silica) from the FGQuartz engineering team: what it is, how it behaves in heat, acid, and light, which JGS grade to pick, what our tubes, boats, crucibles, plates, and custom parts can do, and how ordering works. - [Quartz Glass vs Borosilicate Glass](https://fgquartz.com/quartz-glass-vs-borosilicate-glass/): Quick Answer: Quartz glass is nearly pure amorphous silicon dioxide (SiO₂). Borosilicate glass is about 80% SiO₂ plus boron oxide and alkali. - [Specifications](https://fgquartz.com/specifications/): [/fusion_text] Comprehensive material properties and performance data for FGQuartz ≥ 99.99% high-purity quartz glass, for semiconductor, optical, and high-temperature industrial environments. - [What Is Quartz Glass](https://fgquartz.com/what-is-quartz-glass/): Quick Answer: Quartz glass is an amorphous, high-purity silicon dioxide (SiO₂) glass made by melting natural quartz crystal or synthetic silica without soda, lime, or boron fluxes. - [Privacy Policy](https://fgquartz.com/privacy-policy/): Last updated: January 11, 2026 FGQuartz respects and is committed to protecting your privacy. - [JGS1 vs JGS2 vs JGS3](https://fgquartz.com/jgs1-jgs2-jgs3-quartz-glass-grades/): A technical comparison and selection guide for optical fused silica. - [Contact](https://fgquartz.com/contact/): Standard or custom fused silica parts, from a single piece. Send a drawing, sketch, photo, old part, or just a description of the job. - [About](https://fgquartz.com/about/): We are a quartz glass factory, not a trading desk. - [Home](https://fgquartz.com/): FGQuartz is a quartz glass manufacturer and fused silica factory in Lianyungang, China. ## Optional - [Agent (MCP protocol)](websites-agents.hostinger.com/fgquartz.com/mcp) [comment]: # (Generated by Hostinger Tools Plugin)