When a collision occurs, the shoulder belt tightener compensates for "belt slack" and "film-reel effect" by retracting and tightening the beltstrap.
发成碰撞时，通过牵引和张紧安全带圈带，肩带张紧装置补偿安全带松动和胶片卷轴效应。
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However it is not easy to maintain Leather Watchband many fans feel the pain, here we will tell you the correct belt maintenance concept, so that you can watch strap to accompany you for a long time.