Some customers ask the phone to ask, can the explosion -proof hand stubbu can be caught during use? The answer is obviously no. The first rules of the use of the gourd in hand are: Do not hold it! Of course, explosion -proof is no exception. Covenant to a large extent can easily cause hand -stroke gourd card chains, and unevenly stressed. In addition, there is a probability that causes uneven force in the crane chain. If the stacker is stuck, it is difficult for you to find it. And the force and vertical force of the stricken zipper are completely different. Therefore, explosion -proof hand pulling gourds cannot be caught. If you must be caught in the special situation during the actual use process, then the most important thing to note is that the heavy object is stuck. Do not drag hard. After the stuck is stuck, slowly pull the gourd square as the correct operation method.