... wrought aluminum alloy, extra super duralumin alloy, cast aluminum alloy, AL-Si series10.The quality of ... , wrought aluminum alloy, extra super duralumin alloy, cast aluminum alloy, AL-So series aluminum alloy, AL ... supply, PLC microcomputer automatic control system and special transformer etc19. Reduce porosity of plating layer; strengthen ... General Rectification Dry-type Epoxy-Resin Filled Transformer