... ECT, PAT, FCT, CMT) 1. Ring crush test, 2. Edge crush test, 3. Flat crush test Crush tester for paper and paperboard (RCT, ECT, PAT ... Peru, Costa Rica, etc.1. Description:PN-CT300B type crush tester is a new type of compression testing instrument developed by ... which has compact configuration, pleasing appearance and convenient maintenance. Crush tester for paper and paperboard (RCT, ECT, PAT, FCT, ...