● Test condition: air pressure 28psi, special shaped steel anvil go
to impact the wheel directly from a certain height. The impact
mass of the steel anvil weighs at 22.5kg. For XC rim, our required
impact height is 400mm(energy 90 Joules) ; For Trail rim, our
required impact height is 450mm(energy around 100 Joules); For
all mountain, enduro, our required impact height is550mm
(energy 1225 Joules).
●  Test Standard: Impact in valve hole, the opposition position of
valve hole, and choose any spoke position. After all three impacts,
not any cracks in the rim.
●  Test Result: Test according to the test condition, rim  without any
damage.