| http://www.w3.org/ns/prov#value | - I have make many rotor head before and now . we know how the problem from .we have fix many problem when we are produce the rotor head .the rotor head screw also many many trouble , See The A .it is a good cnc center hub, B is a very propular problem .because the cnc worker drill the (vertical direction ) hole , from top to groud direct , if they drill the hole too hard force . it will easy appear
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