Clay Billing Software for DOS FCI - Version 1 Clay Billing Software for DOS FCI - You will find here software for Sabji Mandi Aadhat, Colour Lab, Studio, Woollen Mill, Petrol Pump, Stockiest, Jewellers, Automobile, Saree Udyog, CA & Income Tax Advocates Utility Package, Payroll, TD-SUPER etc. Clay Billing Software for DOS has developed for Clay and Minerals Mines Owners and Grinding Units.Deigned for mines owner billing pattern. Forwarding letter with invoice printing. Sales Tax / VAT Report. Party wise bill details. Completely code less Fully menu driven. Multi company billing.