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The first doll used the last-version skeleton, you can see the effortness..
The seccond doll used new gear skeleton which was bent easily.
The doll with gear skeleton is far more flexible and ‘ quiet ‘. But, will gear skeleton get loose? NO. Why? bcz the old version used structure of U-shaped clamp + screws, which can be loosed after frequent bending; the new gear skeleton is free of getting loose, bcz the gears sturcture will not loose the the screw so gears stay perpetual turning.
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