we can suggest Compatible parts and other Manufacturer for these devices of ECS:
ECS-320-8-37B-CKY-TR → ABM11W-32.0000MHZ-8-B1U-T3 from Abracon LLC
ECS-160-9-37B2-CKM-TR → ABM11-16.000MHZ-9-B1U-T from Abracon LLC
ECS-TXO-20CSMV-384-AY-TR → ATX-13-F-38.400MHZ-F05-T from Abracon LLC