题目内容：

1.According to our Contract No.257,the goods should be insured against All Risks.
2.As to the mode of payment,we are willing to open L/Cs during the first six months.
3.We do not know why the prices of all the raw materials in countries are advancing rapidly.
4.You shall take our excellent quality and attractive designs into your consideration.
5.Please let us have your reply at your earliest convenience so that we can send you our P/Ifor your opening an L/C.
6.Once we can make you an offer,we will contact you immediately.
7.We are pleased to advise you that we have insured your goods with the PICC against All Risks.
8.Owing to the recent advance in the prices of raw materials,we are forced to make a slight increase in the prices.