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Muscle Group： Pectoralis Major, Latissimus dorsi, Pre-bundle Deltoid
Product Features：- Training muscle groups: pectoralis major, latissimus dorsi, anterior tibia muscle
- Feature of product.
- Enhance the strength of upper limb transverse and back muscle , improve the function of heart, lung and thoracic cavity .
- To benefit the secretion of human growth hormone and improve growth of muscle faster and more effectively
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