What is the best settlement method?

Of course, is to choose the letter of credit as a settlement - because, the letter of credit introduces a third party (bank) guarantee and credibility, and for both buyers and sellers are fairer, but also to protect the rights and obligations of both parties, that is, the seller as long as the letter of credit in accordance with the provisions of the delivery and submission of documents in line with the seller can be from the issuing bank to get The seller can get the promise and guarantee of payment from the issuing bank; and the buyer can get the right of goods (original bill of lading) and related documents after payment, that is, he can get the required goods.