... increase shear strength2: injecting mixture of I-glue and P-glue in slot of extrusion profile througth mixing head, wait ... , good sealing Product after knurlingBefore injecting, knurling notch of extrusion profile, like teeth, standard depth is between ... Zone,Foshan City,Guangdong Province. Wangeshi is an enterprise of researching, developing, manufacturing aluminium profiles equipment,mainly produces ...