# STEMINC

> STEMINC (Steiner & Martins, Inc.) is a supplier of piezoelectric ceramics, ultrasonic transducers, actuators, transformers, sensors, and related electronic components. The site provides product catalogs, technical material information, purchasing information, and support resources for engineers and buyers.

STEMINC product pages are organized primarily under `/PZT/en/`. Product listings typically include part numbers, dimensions, resonant frequencies, electrical/mechanical characteristics, package quantities, and pricing where available.

## Core Product Categories

- [Piezo Discs](https://www.steminc.com/PZT/en/piezo-disc): Piezoelectric ceramic discs in many diameters, thicknesses, electrode configurations, frequencies, and lead options.
- [Piezo Rings](https://www.steminc.com/PZT/en/piezo-ring): Ring-shaped piezoelectric ceramics for ultrasonic, sensing, actuation, and transducer applications.
- [Piezo Plates](https://www.steminc.com/PZT/en/piezo-plate): Rectangular and square piezoelectric ceramic plates.
- [Bolt-Clamped Langevin Transducers](https://www.steminc.com/PZT/en/bolt-clamped-langevin): High-power ultrasonic transducers for cleaning, welding, processing, and related applications.
- [Ultrasonic Generators](https://www.steminc.com/PZT/en/ultrasonic-generator): Electronic ultrasonic power generators for compatible ultrasonic transducers.
- [Ultrasonic Air Transducers](https://www.steminc.com/PZT/en/air-transducers): Air-coupled ultrasonic transmitters/receivers for ranging, sensing, and detection.
- [Ultrasonic Flow Sensors](https://www.steminc.com/PZT/en/ultrasonic-flow-sensor): Ultrasonic transducers and sensors intended for liquid-flow measurement.
- [Piezo Fans](https://www.steminc.com/PZT/en/piezo-fan): Piezoelectric fan and air-moving components.

## Technical Information

- [Piezo Material Properties](https://www.steminc.com/PZT/en/piezo-materials-properties): Reference information for STEMINC piezoelectric ceramic materials and their properties.
- [Sitemap](https://www.steminc.com/PZT/en/sitemap): Site navigation and links to product and information pages.
- [New Products](https://www.steminc.com/PZT/en/newproducts): Recently added products and product updates.

## Purchasing and Support

- [Shipping Information](https://www.steminc.com/PZT/en/shippinginfo): Shipping policies and order-processing information.
- [Terms of Sale / Conditions of Use](https://www.steminc.com/PZT/en/conditionsofuse): Commercial terms, product-use conditions, liability limitations, and related sales policies.
- [Contact STEMINC](https://www.steminc.com/PZT/en/contactus): Contact information and inquiry form for sales and technical questions.
- [Home](https://www.steminc.com/PZT): Main STEMINC storefront and product navigation.

## Optional

- [My Account](https://www.steminc.com/customer/info): Customer account access.
- [Shopping Cart](https://www.steminc.com/cart): Current shopping cart.