Zinc and Nickel Plating - Rack and Barrel Plating - Monroe Plating Zinc,zinc plating,ISO 9002,QS 9000,HUBZone certified,distributor of zinc coatings,zinc finishings,rack and barrel finishes,Chromate options,zinc plating,magnetic multi-scopes,salt spray chamber,X-ray fluorescence,acid-chloride plating baths For the past 35 years, Monroe has specialized in zinc and zinc alone. Today, we have four fully automated, computer-controlled finishing lines providing both rack and barrel finishes. From business machine parts to car engines, zinc continues to be a superior, cost-effective performer in a variety of industries