... , breaking the traditional machine-made concepts in the farrowing crate.It is just like to make different clothes ... technology,we shrink the leak aperture of plate at sow position to 8.5-9mm, avoid too large ... leak lock pigs feet and do harm to sow nipple.However the traditional size is 11-12mm, ... make it impossible to break by pigling. 4.Sow position can adjust all-round,suitable for different size ...