igh-strength steel screws for long service.2、modile csreen mesh is easy to install or disassemble for cleaning and changing colors.3、before and behind the machine box therei is sound-insulating layers to minimize the influence of noised to the environment.4、the motor is provided with safeguard of over-load and chain safeguard system of power,so it is very sary safe when operation and purify.5、double sealing devices are set in the crushing chamber and cutters are closely matched to pervent po