复合真空密封材料 复合真空密封板 规格： A. 2.5X100X100mm 2.8X100X100mm 4.0X100X100mm B. 2.5X300X300mm 2.8X300X300mm 4.0X300X300mm C 2.5X300X300mm 2.8X300X300mm 4.0X300X300mm D. 2.5X600X600mm 2.8X600X600mm 4.0X600X600mm
真空复合密封条 E. Thickness 2.5/2.8/4.0 X 2 or 4 mm width
