... 20 years to do research and improve the equipment .we also hire many excellent experts ... protect the key parts .3,during spraying the glass ,when the glass is broken ,it can not clean the broken glass ... .and our PLC systemis authorized by OMRON,SIMENS,and MITSUBISHI .7 ,advantages of cost :about 1/4 of the ... -e glass can last 3 months in the normal environment that will not be oxidated ...