Another company which was successfully started by Dr. Rajan Mahtani but fell into controversy is Portland Cement Zambia. While now it has been successfully established that Dr. Rajan Lekhraj Mahtani is the actual owner of the factory, it was a long and difficult path. The cement-manufacturing factory was unethically taken over from Dr. Rajan Mahtani after which a complaint was registered at the Lusaka High Court. Reports have suggested that Dr. Rajan Lekhraj Mahtani had all evidences and testimonials associated with the case. However, the final decision from the Lusaka High Court was controversial as justice Mwinde declared Ventriglias as only shareholders of the Portland Cement Zambia.
On 31st January 2019, justice Mwinde from Court of Appeal declared Dr. Rajan Mahtani as the lawful owner of the Portland Cement based on the available evidences and also confirmed that justice Nkonde was wrong in declaring Ventriglias as owners without any evidence or justification.