- Serving The Aerospace, Electronics & Machined Parts Industries. NDT & Inspection: Magnetic Particle; Penetrant; X-Ray; Ultrasonic (Contact, Immersion & C-Scan); Nital Etch; Eddy Current. Metal Finishing: Phosphate-Fluoride Coating; Alodine 1200 Cleaning; Etching; Pickling; Abrasive Blasting; Chromic & Sulfuric Acid Anodizing; Painting; Cadmium & Titanium Cadmium Plating; Stress Relieving.www.ripak.com