Ковкий крышка люка окружающей среды

1. Its made of QT400, 5007, 25 characterized with no deformation, no cracking, which has passed the standard test of CT/T3012-1993. 2. Its contact surface has been machinery processed to prevent the manhole cover from jumping, ringing, displacing and falling. 3. With the electrostatic spraying technique, its surface will be durably colorful personalized with anti-UV, water-proof, and anti-aging. Also, any professional picture, name and customer service phone can be designed according to our customers 4.Applicable place (for certain activities) :Expressway and city trunk road , national highway. 5.Welcome to visit our website to know more adout us and have a good cooperation!