Founded in 1996, Popai Trading Co., Ltd. is a small and medium-sized fitness equipment company, and Sowell is its brand. Sowell arm force is different from the traditional arm force machine and Qijun arm force machine, it supports 4 kinds of force adjustment, so as the strength increases, there is no need to replace the arm force machine, which is more convenient. However, because it is slightly larger and cannot be bent at the same time, some workouts cannot be used. Sowell's indicators perform well, and the price is more expensive, about 125 yuan, which is suitable for users who do not like to toss and focus on arm strength exercises.