求翻译：收到信用证后，卖方立即与早已联络好的供货商签订合同，指定进口阆中保健醋。根据信用证规定，卖方随机寄出样品给F.F.公司检验。F.F.公司收到后，经检验合格，签发客检证正本一份并寄回给卖方。是什么意思？

After receiving the letter of credit, contact the seller immediately and had a good supplier contracts, specifying the import Langzhong vinegar. According to the letter of credit, the seller sent the sample to the FF's random testing. FF received by the Company, after inspection, the original inspec

Immediately after the letter of credit, the seller has already contacted good suppliers must enter into a contract with designated imports from the health care. According to the letter of credit, based on the seller sent out random samples to test company F . F . . F F . . After receipt by the Compa

After receives the letter of credit, the seller immediately and already contacts the supplier sign contract, assigns the import lang health care vinegar.Stipulated according to the letter of credit that, the seller mails out the sample to examine stochastically to F.F. Corporation.After F.F. Corpora

Upon receipt of the letter of credit, contact the seller immediately and had good suppliers to sign the contract, all imports of langzhong vinegar. According credit, sellers random samples sent to F.F. Clair. F.F. company after receipt, inspection, issue a certificate of clearance of passenger traff

After receiving the letter of credit, contact the seller immediately and had a good supplier contracts, specifying the import Langzhong vinegar. According to the letter of credit, the seller sent the sample to the FF's random testing. FF received by the Company, after inspection, the original inspec