Polished Substrates
Polished substrates with excellent surface smoothness, tight thickness tolerance and flatness for precision electronics.

Built to your drawing.
Polished substrates with excellent surface smoothness, tight thickness tolerance and flatness for precision electronics.
- Precision grinding to ±0.005 mm, lapping to Ra 0.02 μm
- Prototypes from 1 piece — production volumes welcome
- CMM inspection report & material certificate with every lot
48H ENGINEERING REVIEW :: NDA ON REQUEST
Material options
Not sure which grade fits? Our engineers recommend material and tolerance stack based on your operating conditions — media, temperature, pressure and cycle life.
:: Used In| Forming | Dry pressing / isostatic pressing / injection molding |
|---|---|
| Machining | CNC grinding, lapping, polishing, honing |
| Tolerance | Down to ±0.005 mm on ground features |
| Surface Finish | Ra 0.02–0.05 μm lapped · Ra 0.4–0.8 μm as-fired |
| Max Size | Up to Ø600 mm / 800 mm length |
| Prototypes | From 1 pc — no MOQ for sampling |
| Lead Time | Samples 2–4 weeks · production by volume |
Every lot, documented.
Formed and sintered at our Huzhou base, precision-ground in Huizhou. CMM dimensional report, material certificate and optional SEM imagery ship with your order.
Two ways to reach an engineer.
Send your drawing through the RFQ form for a documented 48-hour review — or WhatsApp us photos and sketches for a same-day first answer.
More for Electronics

Pressure Sensor Ceramic Components
High-precision ceramic diaphragms, capsules and bases for pressure sensors — stable from vacuum to high-pressure service.
View Details →
Substrates for Power Modules
High-strength AlN and alumina substrates compatible with direct copper bonding — the base of reliable power modules.
View Details →
Thick Film Substrates
96% alumina thick-film substrates for hybrid circuits — dense, precise and reliable at production scale.
View Details →
Pressed & Extruded Ceramic Parts
Small pressed and extruded ceramic parts in a wide variety of materials and forming technologies for electronic devices.
View Details →
Thin Film Substrates
High-purity alumina thin-film substrates with superior surface smoothness for fine-line circuitry.
View Details →
Glazed Substrates for Thermal Printheads
Glazed alumina substrates with fewer surface voids — ideal for high-resolution thermal printheads.
View Details →