(1) Late opening of L/C is a breach of contract. The company should first investigate the responsibility of Hong Kong businessmen for not opening the letter of credit late as stipulated in the contract. Then ask the other party to amend the letter of credit and ask the Hong Kong businessmen to extend the shipment date and the validity of the letter of credit.

(2) Change the payment method twice, and change the settlement method of the letter of credit to D/P45 days, and then to D/A90 days. The buyer obviously has the purpose of deceiving the seller not to pay for the delivery.

(3) As the other party sent the amendment on April 16, which only corrected the quality of the goods, the validity period and validity period were before April 30th and May 6th of the original certificate. The title does not mention whether the letter of credit allows repackaging, which is considered to be allowed according to UCP600. So we loaded some goods on April 30th and sent the documents to the Hong Kong issuing bank on May 4th. If there is no discrepancy, the issuing bank cannot refuse to pay.