2019CJ/T 540-2019 Gravity Sludge Thickener Suspension Center Drive Thickener
1993CJ/T 3014-1993 The suspending center driving sludge scraper for gravity sludge thickening tank
CJ/T 3014-1993 The suspending center driving sludge scraper for gravity sludge thickening tank was changed to CJ/T 540-2019 Gravity Sludge Thickener Suspension Center Drive Thickener.