When it comes to explosion -proof hands, one of the first features are the fire -bleeding spark. It can be used in a flammable and explosive environment because it does not spark. In the process of using ordinary hand -pour gourds, it will produce sparks and cannot be used in flammable and explosive environments. The main reason is that the explosion -proof hand stubburies are based on aluminum bronze, while ordinary hand pour gourds are based on alloy steel, and the different materials determine the different direction of use. The specific environment should be used to use a special hand -stracting gourd. As for whether the explosion -proof hand pour the gourd every part is explosion -proof, it is not because the pure copper is too soft and does not meet the requirements of the lifting. Copper alloy, give an example two gears bite together, as long as one is a copper alloy to avoid sparks.