单项选择题

阅读下列短文，从每题所给的四个选项([A]、[B]、[C]和[D])中选出最佳选项。
A

Nipponex Electrics Tokyo, Japan 27 December 2005 Amperlite Ltd 146 O’ Leary St Dublin, Ireland Dear Sirs, Improved ways of production make us able to offer you our change of Drilite batteries (电池) at a reduced price for large quantities. Further information of the new prices for your market are sent to you together with the letter, and you will see that the price has already reduced 5 percent. As c. i. f (成本、保险加运费) to Dublin is included in our prices, you will agree that they are clearly lower than those of producers of the same batteries, both here in Japan and elsewhere. The quality of our products remains the same--only the finest chemicals are used. The new prices are for the least orders of 1 000 pounds and will begin from January 1. Immediate sending off is sure because enough can be made whenever you require it. We appreciate your past dealing and co-operation (合作) with us, and look forward to supplying you in the new year at the new prices. Yours truly, Nipponex Electrics

From the passage we know the quality of the products______.