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* Strong Power * Comfortable Massage * Tremor Stretching 1. Hand dysfunction. 2. Postoperative sequelae. 3. Numbness and weakness of hand. 4. Finger curling in the elderly. it can not only train flexion and extension function of the hand, but also train grip strength of the hand. separate training for each finger, more in line with the training requirements. synchronism of both hands
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