人妻少妇波多野结衣_亚洲色视视频在线观看_亚洲欧美在线x视频_丰满人妻无奈张开双腿AV_无码人妻丰满熟妇区五十路百度

The precautions for using waterproof joints mainly include the following four points:

1. Do not install waterproof joints when it is raining, as it can easily cause water to enter the cable and cause dangerous accidents. Moreover, water entering the cable can affect its service life.

2. There are many models of waterproof joints, so it is important to pay attention when purchasing. First, consider which model is needed to avoid being unable to use it after purchase.

3. The price of waterproof joints is not cheap, so when choosing, do not be greedy for small gains. Choose high-quality waterproof joints, which will also be safer to use.

4. When installing, insulating sleeves should be used to not only provide insulation, but also protect waterproof joints from wear and tear, thereby improving the waterproofing and durability of waterproof joints.