Dear Sir/Madam,
Here is a printing factory from China.
To give you idea of the various kinds of paper products now available for
export .
On your desk, there may be business cards, cover folders, catalogue, books,
pens, sticky memo pads with compliments etc.
We shall be very glad to handle for
Dear Tim,
In the way the algorithm was designed, the lower mass is always considered to
be the parent and the higher mass is considered to be the adduct. That's why id
doesn't work with negative adduct masses.
However, since your usage is plausible (although you're not exactly searching
for "a
