EXHIBIT 23.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the use in this Registration Statement on Form S-4 of Kronos International, Inc. of our reports dated March 28, 2006 relating to the consolidated financial statements and financial statement schedules of Kronos International, Inc., which appear in such Registration Statement. We also consent to the reference to us under the heading "Experts" in such Registration Statement. PricewaterhouseCoopers LLP Dallas, Texas June 6, 2006