good quality of rubber speed hump : 1.attractive bright color 2.cold/hot resistant, 3.anti-impact/cra good quality of rubber speed hump :1. One time forming, cold resistant, hot resistant, anti-impact, durable, With the water in it ,the buffer elasticity will be better, without the water, it can be moved easily. 2. With the reflective film, the color of bucket is very bright and it is also ...