9.11.All correspondence of the Parties shall be sent with return receipt requested:From the Buyer to the Supplier at the address:From the Supplier to the Buyer at the address:9.12.The Parties have agreed that all conditions and issues related to the quality of Goods under this Contract are governed by the "Agreement about active pharmaceutical ingredients quality" Appendix 2 which is an integral part of this Contract9.13.This Contract contains the following appendices:- Appendix 1- Appendix 2 "Agreement about active pharmaceutical ingredients quality "- Appendix 39.14.This Contract is drawn up in Russian and English. It is assumed that both versions have equal understanding, but in case of discrepancies between the two versions, the Russian version will prevail.