1.独特的配重、防倒设计; 
 2.顶部增加了挂扣可加链条; 
 3.印刷LOGO部分有八角、椭圆、梯形三种选择;
 4.顶部可夹警示灯。

 1, Unique counterweight design, could stand stably;
 2, With hang buckle, where could hang on the chain;
 3, There are three kinds of shape for the part of logo printing, those are octagon, oval, and trapezoid;
 4， Could added caution light on the top of the warning sign.