哈萨克斯坦信用证如下，可以接受吗？

1. The first payment on the letter of credit in amount of 50 (fifty) % of the total cost of Goods under the present Contract, i.e. USD 11657 (eleven thousand six hundred fifty seven) shall be paid after??the shipment of the goods on board the vessel at the port of Xingang China??and Seller’s providing the??to the nominated bank. - Invoice (Original-1) - transport waybills (for corresponding delivering transport) per each consignment of the Goods delivered under the present Contract – 1 (original); 2. The second payment on the letter of credit in amount of 50 (fifty) % of the total cost of Goods??under the present Contract, i.e. USD 11657 (eleven thousand six hundred fifty seven)??will be made after the signing of the??Hand-over Protocol of goods between the Seller and the Buyer and Seller’s providing the??to the nominated bank? ?the signed by parties Hand-over Protocol (original). 4.4. The validity of the letter of credit is 180 ( one hundred eighty)??calendar days In the case of changing the term of the credit for all of the costs borne by the Seller of its change.