FineWin Wafers | High-Quality Sapphire, SiC, LN, LT & Silicon Materials

About FineWin

A trusted name in high-purity crystal and wafer manufacturing, delivering precision-engineered materials for next-generation technologies.

Our Vision

To be a global leader in advanced semiconductor and optical materials by consistently delivering high-quality, innovative crystal solutions that empower technological progress across industries.

Core Expertise

Sapphire crystal growth and substrate processing
Silicon and SiC wafer fabrication
Lithium Niobate (LN) and Lithium Tantalate (LT) crystal production
Custom optical material processing and window fabrication

Our Products

Precision-engineered semiconductor and optical materials for cutting-edge applications in electronics, photonics, and optoelectronics.

Sapphire Substrates

High-purity C-plane, A-plane, and R-plane sapphire wafers for LED, RF, and power device applications.

Silicon Wafers

Single-crystal silicon wafers in various orientations and resistivities for IC and MEMS fabrication.

4H SiC Wafers

High-quality 4H silicon carbide wafers for high-power, high-frequency, and high-temperature devices.

LiNbO3 (LN) Crystals

Periodically poled and congruent lithium niobate crystals for nonlinear optics and modulators.

LiTaO3 (LT) Crystals

High-resistivity lithium tantalate crystals ideal for SAW filters and piezoelectric devices.

Sapphire Windows

Optically polished sapphire windows with high transmission from UV to mid-IR for harsh environments.

Patterned Sapphire Substrates

Nano-patterned sapphire substrates (PSS) to enhance LED light extraction efficiency.

Silicon Sputtering Targets

High-purity silicon targets for thin-film deposition in semiconductor and solar cell manufacturing.

Thermal Oxide Silicon Wafers

Silicon wafers with thermally grown SiO₂ layers for gate dielectrics and passivation.

Wafer Carriers

Custom carriers and handling solutions for safe transport and processing of fragile wafers.

Sapphire Ingots/Rods/Blanks

Custom-sized sapphire boules and blanks for further processing into substrates or optics.

Other Optical Materials

Custom processing of TeO₂, BK7, fused silica, and other specialty optical crystals.

Why Choose FineWin?

Our advanced manufacturing capabilities, strict quality control, and deep technical expertise ensure reliable, high-performance materials.

High Purity & Precision

All materials are grown and processed under controlled environments to ensure ultra-high purity and dimensional accuracy.

Advanced Equipment

State-of-the-art crystal growth furnaces, precision slicing, lapping, and polishing systems ensure consistent quality.

Global Market Reach

Trusted by customers in Asia, Europe, and North America for reliable supply and technical support.

Frequently Asked Questions

What types of sapphire substrates do you offer?

We offer C-plane, A-plane, and R-plane sapphire substrates in various diameters and thicknesses, suitable for LED, RF, and power electronics applications.

Do you provide custom wafer specifications?

Yes, we support custom specifications including diameter, thickness, orientation, doping, and surface finish for silicon, SiC, and sapphire wafers.

What is the lead time for standard products?

Standard products typically ship within 2–4 weeks. Custom orders may require additional processing time depending on complexity.

Are your LiNbO3 and LiTaO3 crystals periodically poled?

Yes, we offer both congruent and periodically poled lithium niobate (PPLN) and lithium tantalate (PPLT) crystals for nonlinear optical applications.

Can you process other optical materials?

Yes, in addition to our core products, we process TeO₂, fused silica, BK7, and other specialty optical crystals upon request.

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