Gooods mfg for Exports

dear sir,
WE ARE A MANUFACTURER OF PLASTIC GOODS PURCASE OUR RAWMATEIAL AT THE GST RATE OF 18% AND 28% AND MFG. THE PRODUCTS TO SOLD TO MERCHANT EXPORTERS AT THE CONCCESSIONAL RATE OF 0.1% GST ,exporter exported the Goods within 90 days of our tax invoice AND THEN Question arise that can we get ITC back on our rawmaterial 18% and 28% paid to Mfg the products for exporter