Mrs . Miller , you are an old friend of ours . In order to encourage future business and as a gesture of friendship , we are prepared to cut our price by 5 % . Will that satisfy you ?   That's great . Thank you for making this concession . I accept .   Now I repeat , 5,000 transistor sets , specifications as shown in our catalogue at $ 20 each C . I . F . Los Angeles .   Good . Now that the price is decided on , we can discuss the packaging .   As to packaging , we'll pack them two dozens to one carton , gross weight about 25 kilos a carton .   Carton ?   Yes , corrugated cardboard boxes .   Could you use wooden cases instead ?   Why use wooden cases ?   I'm afraid the cardboard boxes are not strong enough for ocean transportation .   Cartons are comparatively light , and there fore easy to handle . They'll not be stowed away with the heavy cargo . Besides , we'll reinforce the cartons with metal straps .   All right . Carton or no carton , the packaging must be waterproof as well as strong enough to stand shock and rough handling .   You needn't worry about that . Cartons are extensively used in our shipments to foreign countries and there have never been complaints from our clients . Now , as regards payment , we have agreed to use dollars , am I right ?   That's right . As soon as I get home , I'll see about the opening of the letter of credit .   Please open the letter of credit 15 to 30 days before the date of delivery so that we'll have enough time to make all the necessary arrangements . Another thing , the L / C should be valid until the 15th day after shipment .   No problem . That can be done . I understand you'll ship the goods before the end of May ?   Right . We'll ship the goods according to the agreed time schedule . Last , but not least , the inspection is to be carried out by Houston Commodities Inspection Bureau , which is final and binding on both parties .   Yes , we agreed to that . We have great confidence in your inspection institution . Through years of dealing with you , we've convinced of your commercial integrity .   Thank you . You can rest assured that we'll do everything possible to prevent de festive commodities from going abroad . However , if there should be any disputes , we wish to have them settled through friendly discussions .   Exactly . That's what we have done in the past . 