Founded in 1958, Warth & Klein Grant Thornton is an accounting, tax, and audit firm that also provides advisory services. The firm caters to a wide range of industries which include the automotive industry, chemicals and pharmacy, energy and clean technology, mechanical and plant engineering, and technology and media, among others. Warth & Klein's has a wide array of services within the horizon of assurance, tax, outsourcing, and corporate finance, being private finance, mergers, and acquisitions, tax consulting, transfer pricing, internal audits, regulatory consulting, financial statement audits, and audit-related advisory, business risk services, forensic & investigations, recovery and reorganization, asset controlling, wealth reporting, annual financial statement preparation, international tax consulting, corporate succession, transfer pricing, and global mobility services. The firm is headquartered in Dusseldorf, Germany.