自动卷管器
产品说明：自动收纳软管，内置卡簧，用时人工拉出适合长度，保持1秒即卡住，使用完毕后，轻轻一拉，再松手即可全部收回，方便收纳，软管收拉不扭结，有效延长软管寿命。
product description: Automatic storage hose ,have internal clamping spring, pull-out suitable length by hand in using, and keep 1 seconds it can lock. After using, Gently pull it and then loose it, it can be roll up totally. Convenient storage and won’t twist together, effectively extend hose life.
