牝教师4～淫辱の教室_双性国师裸体调教h_夫妻一级生活片_夜夜爽夜夜叫夜夜高潮漏水

1. Welding method: ultrasonic vibration with welding head will be transmitted to the ultrasonic welding parts, because of the two welding acoustic resistance, resulting in localized high temperatures, so that the welding part the interface melt. Under a certain pressure, make the two welding parts to…

1, nut hot melt machineModel: QL-RH600Functional characteristics:1 constant temperature heating.Two 2 section of the lower pressure stroke design, each period of stay alone can be adjusted3 low power heating temperature, precision OMRON digital temperature controller to control temperature, so that t…

Ultrasonic protective film automatic feeding machine solves the traditional manual replacement of protective film, the efficiency is slow, the work intensity is big, the protection effect is not good, the operation is not standard and so on. Greatly improve the production efficiency, to achieve autom…

Melt spinning type plastic welding machine is the heat generated by friction between the plastic parts, plastic workpiece surface melting, again by external pressure, drive prompted a workpiece rotating solidified into one. And the positioning of the rotating melt is in the set time rotation, the mom…