【正文】
ausing increase probability of surface scratches, restrict temperature an humidity control Less vibration, Low temperature and humidity effect, causing increase probability of surface scratches. Low vibration, less surface scratches, no guarantee on temperature and humidity. Less temperature and humidity effect, less vibration, low surface quality defect. Less temperature and humidity effect, less vibration, low surface quality defect. Security Average security Low security Average security Higher security Higher security Total rating Bad Bad Bad Average Good Page10 Confidential Key message: Before we buy the rack to take D model,we will take the B model. Page11 Confidential THE END Thank you!