Ultrasonic Spray Systems Leadership through Innovation Since 1975

Company Overview Sono-Tek Corporation A global technology company committed to providing a world class customer experience. Providing customer-driven ultrasonic spray coating solutions. ISO Certified. Changing Industrial Spraying & Coating

Company Highlights Sono-Tek invented ultrasonic spray technology in the 1970s. Today SOTK is the largest manufacturer of ultrasonic spray coating systems in the world. Thousands of systems sold. Hundreds of customers in six major industries. Customers in dozens of countries worldwide.

Common Stock Sono-Tek became a publicly traded company in 1987. The Company’s Common Stock trades in the over-the-counter market on the OTC Bulletin Board under the symbol SOTK.

Ultrasonic Nozzle Technology SOFT, LOW VELOCITY SPRAY WITH MINIMAL OVERSPRAY SELF-CLEANING ULTRASONIC VIBRATION LARGE OPEN CHANNEL Conventional nozzles clog - ultrasonic nozzles do not Thin and precise coatings possible Up to 80% reduction in water, chemicals, energy and waste

Why Sono-Tek? We invented ultrasonic nozzle technology Over 30 years of experience in the development and application of this technology Numerous patents and intellectual property Patent History Central bolt ultrasonic atomizer Apparatus and method for applying a stream of atomized fluid Unitary axial flow tube ultrasonic atomizer Ultrasonic transducer drive circuit Ultrasonic liquid atomizer for high flow rates Ultrasonic liquid atomizer with axially extending liquid feed passage Ultrasonic fuel atomizer Transducer assembly for ultrasonic atomizer Ultrasonic atomizing nozzle and method Recent Applications Process for coating three-dimensional substrates with thin organic films - AWARDED Method for ultrasonic spray shaping Process and equipment for ultrasonic spray coating of foods Ultrasonic method for establishing and maintaining a liquid suspension dispersion and delivery system

How Ultrasonic Nozzles Work Sono-Tek is the originator of ultrasonic spray coating technology, commercializing this science in the 1970s. Atomization is based on high frequency sound waves, and uses no pressure. A pair of resonating transducers are located inside the nozzle body. High frequency electrical current causes the transducers to expand and contract. The frequency of the signal is the frequency of the nozzle (25-180kHz). The tip resonates in an axial motion. The amount of motion is dependent upon nozzle frequency and power level applied. When liquid is fed through a resonating nozzle, waves form on the atomizing surface. Droplets fall off the tips of the waves. These droplets have a mathematically definable size.

Conical Nozzle

The Ultrasonic Advantage A comparison of Sono-Tek’s WideTrack Glass Coating System and the pressure nozzle system it replaced

Drop Size More precise, more repeatable, more uniform coatings with minimal waste and no clogging compared to conventional coating techniques. Drop size distribution comparison = 60 kHz Sono-Tek Ultrasonic Nozzle = Pressure Spray Nozzle Ultrasonic spray produces droplets with very little variation in size, providing very uniform, thin layer coatings. This results in a much Faster ROI than conventional spray systems.

Spray Shaping Spray Shaping Technologies WideTrack Dual Jet MicroMist™ AccuMist™ Vortex Impact Sono-Tek continues to innovate spray solutions not available anywhere else. Ultrasonic nozzles are designed to achieve many different drop sizes, spray widths and patterns using a variety of air shaping methods.

Electronics & Advanced Energy Applications Printed Circuit Board Fluxing Flip Chip, MEMs Semiconductor Fuel Cells Solar Cells

Ultrasonic Coating Solutions Applications Medical Devices Blood Collection Tubes/Syringes Glass Textiles/Industrial Food

Customer Base Hundreds of Multi-National Companies Around the Globe… BECTON DICKINSON

Worldwide Sales FY2012 Sales by Product Type Significant Repeat & Flow Business

Worldwide Sales FY2012 Sales by Market Segment Strength through Diversity

Worldwide Sales FY2012 Sales by Territory Global Presence

Global Distribution Network Our extensive global support and distribution network provides factory trained representatives with local language support in dozens of countries worldwide.

Applications History & Development Historical Perspective Continued penetration of existing & new markets 1980 1990 2000 2010-2013 Blood Collection Tubes - Nozzles Printed Circuit Board - SonoFlux Medical Devices (Stents) - MediCoat Glass, Solar, Fuel Cells, Food - ExactaCoat - FlexiCoat - WideTrack BLOOD COLLECTION PRECISION ELECTRONICS MEDICAL DEVICES GLASS Increasing Applications Over Time

Current Applications Printed Circuit Board Manufacturing Six Major Industry Areas Printed Circuit Board Manufacturing Spray Fluxing Conductive Isolation Coatings Advanced Energy Fuel Cell – Proton Exchange Membrane (PEM) Coatings, Solid Oxide Fuel Cell (SOFC) Coatings Solar Cell – Thin Film and Silicon Solar Cell Manufacturing Semiconductor Manufacturing Flip Chip Fluxing Photoresist onto Wafers, MEMs Advanced Electronics OLED manufacturing Transparent Conductive Oxide (TCO) Coatings UCS (Ultrasonic Coating Solutions) Medical Devices Implantable Stents, Balloons, Catheters, Orthopaedic Implants Blood Collection Tubes/Syringes Medical Textiles/Bandages Industrial Coatings (Glass, Food, Textiles) Float Glass - Anti-stain, Anti-scratch Coatings Lens Coatings Panel Glass Fragrance, Anti-microbials, Flame Retardant onto Textiles Anti-microbials, Flavorings, Oil onto Food Products

Recent Technology Developments Core Technology Chemically resistant nozzle materials The use of chemically compatible materials opens up new markets to spray processes that previously used other deposition methods. Designed to resist greater than 30% HCl acid. No compromise in acoustical performance (atomization performance equal to standard materials). Critical to the future TCO market.

Recent Technology Developments Coating Systems for Niche Markets MediCoat BCC balloon catheter coating system Opens a new market for coating angioplasty drug eluting balloon catheters. Designed to spray drug eluting polymers and solutions similar to already proven spray process with stent coating. Familiar channels to niche medical device markets such as implantable stent and catheter manufacturers. ChemCoat inline diffusion acid doping system for PV manufacturing Opens a new market for inline diffusion (phosphoric/ boric acid doping) in PV solar manufacturing. Nearly 100% plastic construction materials enable spraying of acidic materials. Designed for use with solar manufacturing, high volume manufacturing. Inline diffusion increases production efficiency, with no decrease in solar performance. Market entry depends on recovery of solar market.