英语翻译

英语翻译
Dear Sirs,
We thank you for your quotation No.1234 on 5,000 pcs of plastic speaker.
Reverting to the 10 lots of speaker stand which arrived here per M/v "Orient" on October 30,in the same hold,we have to inform you that among them,six cartons of different sizes arrived in a broken and mixed condition because their packing was not sufficiently strong and their plastic hoops broke in transit.Since it was most difficult to assert them,inconveniences and losses occurred.Though such unfortunate things have also occurred before and you were notified to that effect in time,the present case shows that our comments were ignored,for no improvement in packing has been made.
Therefore,we must have your promise to take effective measures to improve your packing before we could make this new order with you.
We await you reply.
Yours faithfully.