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YCQ Mono-strand jack have internal re-usable anchor which can automatically clamp and loosen the wedge, they are main used for QMV.M15 and QMV.M13 type various single tensioning with bonded and unbounded.
YCQ type Mono-strand jack could be matched with different size, length of the top cover. retreat anchor design, to used in the experiment by root tension pre-tightening, tension retreat anchor and stay cable tone with single cable.

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