Thank you for your inquiry, but we cannot make you an offer right now because we are presently unable to obtain appropriate materials.
谢谢贵方询价,但我们不能马上发盘,因为目前我们得不到合适的原料。
I don't want to imply that every point in this contract is negotiable.
不用我说,该合同中的每一条都要严格执行的,没有讨价还价的余地。