Info Yannie Huang:
I got information that this machine function is ok, there is some risk for our wafer during production, need to improve. Actually, Wuxi never use it for production due to the risk as below:
1) When pick up one wafer, several wafers will be picked up together due to vacuum between wafers is not release (risk: wafer drop and damage), need to enhance air blow system
2) Cannot 100% distinguish the color of protection paper and wafer surface of our products |