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The
shell-shape propeller is a propeller of high thrust
high efficiency energy saving. It is designed and developed in cooperation with Professor
Zhou of South China University of technology, The shape-shell propellers has obtained a
patent certificate in 1999. Its patent certificate number
is ZL99 240826.1.
The high efficiency comes from the fact that its blades have
two-way concave paraboloid which differs from the common
propeller helicoid.The biggest
performance characteristic is that the |
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