Please Help: PLACE OF SUPPLY

Sir,i am Regsitered in Vadodra my Client Regsitered in Maharastra he is Given me order for supply material in Vadodra, but he don't have Gst number in Vadodra.he is a Contractor. he is just given me his site address with His name and C/o ABC Party name we are dielivery goods at site in Guajrat. Which Tax Applicable in this case SGST/CGST or IGST.