We are so sorry for delaying the offer to the customer,due to the gap of the quoted price between the product mix craft and our factory,for ur reference,we have given four of the products a business accounting ,and sorry for that mistake again.
not so sure about the meaning of the sentence"由于报价产品结构工艺同我厂目前生产的相差较大".
a hand be given,just for reference, .:)