“授权书”的英文怎么说？

授权书为 the letter of authorization
也可以直接用 authorization
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例：
1. If the chairman of the board of directors is appointed as the chief representative or representative, the letter of authorization shall be signed by no less than two members of the board of directors of the enterprise.
如董事长任首席代表或代表，其授权书必须由该企业董事会两名以上董事签署。
2. May I see your authorization for this?
我可以看看你做这件事的授权书吗?

纯手工
power
of
attorney
hereby
appoint
and
authorize:guangzhou
mervyns
garments
co.,
ltd.
the
power
to
use
the
trade
mark
of
“french
mervyns
international
garments
group”
as
product
label
in
all
aspects
such
as
advertising,
packaging,
production,
products
and
so
on.
hereby
to
grant
this
authorization.
signature
(seal)
of
the
authorizer:
希望能帮到你！有兼职翻译可以找我做哦^^

"Valid
for
one
year.
Renewable
afterwards."

Authorization或者warranty

Letter of Authorization 经常看到相关文件里这样说。