... heterotyoe Automatic Round GluIing Robot single glue syringe /speaker, receiver, amplifier, buzzer Item: Automatic 3D Glue Robot( Single glue syringe)Item ... and welding,such as speakers, receivers, sounders, buzzers, etc..Optical Models(According to operation mold) Item No.Glue tankApplicableOperation Mold ... / Heterotype/ glue spray machine suitable for producing speaker, receiver, amplifier, buzzer