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60
!
.
,
.
.
:
.
.
,
,
.
(CEI
UNI
CIG).
.
,
.
300 cm²
15.
(
)
,
(
90°C).
,
7
8.
:
,
,
10 mm.
/ ,
15 mm
. 9.
,
.
:
. 7,
.
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