( 1 ) SINGER Sewing Machines Co. , a Corporation under the laws of the State of New Jersey, United States of America, is carrying on business of marketing domestic and industrial sewing machines of various kinds in India. lt s principal office is at Bombay and branch of it is at Delhi. Plaintiff No. 2 is a company incorporated under the Companies Act. It is the case of the plaintiff that U. P. Export Corporation Ltd. , defendant No. 1 herein decided to set up garment complex at Loni for which purposes it had discussion with the plaintiff for the supply and installation of various kinds of industrial Sewing machines. Quotations were exchanged and ultimately the defendant No. 1 placed an order on the plaintiff for supply of 210 numbers of plain machines at the rate of Rs. l400. 00 per unit and 60 numbers of motorised machines at the rate of Rs. 2,225. 00 per unit. Per that order, the plaintiffs were to supply these machines to defendants 2 to 7 as per the manner set out in the said order. After the successful inauguration of the garment complex, defendant No. 1 placed further order desiring the plaintiff to keep 100 plain machines and 50 motorised machines ready for su