Translate the following counter-offer letter into chinese, and then write rejection letter to the following counter-offer.

  Subject: Counter-offer

  Dear Sirs,

  We have been very pleased with your product, as you know．However, we find that we can obtain a price of $4．00 per hundred with a local firm．This is fifty cents per hundred lower than your price.

  If you can see your way clear to meeting these figures we would be pleased to place with you an order that will carry us for the rest of this year．That order is likely to be one of the largest that we have ever placed with you.

  Sincerely,