填空题

May 20th, 2005
Dear Sir or Madam,
Re: Order No. 2170 for 1, 000 M/T Tin Foil Sheets
Referring to our letters and telexes in respect to Order No. 2170 for 1, 000 metric tons of Tin Foil Sheets, so far we have no definite information from you about delivery time, although these goods are contracted for shipment before the end of last month, and our L/C was opened with the Bank of China as early as in March 2005. We have been inconvenienced by the delay. You should telex us immediately of the earliest possible date of shipment for our consideration without prejudicing our right to cancel the order and lodge claims for our losses.
Please look up the matter and give us your definite reply without further delay.
Sincerely.

With which bank was the L/C opened？
The L/C was opened with （）.