THE BUYER SHOULD OPEN A BANK ACCEPTABLE TO THE SELLER AN IRREVOCABLE L/C PAYABLE AT 30 DAYSAFTER SIGHT,FOR 100% OF TOTAL CONTRACT VALUE TO REACH THE SELLER BEFORE MAY 31 TH ,2015 VALIDFOR NEGOTIATION IN CHINA UNTILTHE 15 TH DAY AFTER THE DATE OF SHIPMENT 。 ( )提供开证行开立信用证