This is MDH of Chemical pumps,the model numbers are as below: MDH-440 MDH-441 MDH-422 MDH-4..

These are MX Series of chemical pumps,the model number are as below: MX-70M MX-100M MX-250 ..

These are UCE Series of Magnetic pumps,the model number are as below: UCE-400 UCE-401 UCE-4..

These are CM Series of magnet pumps,below are the model number: 402H 502H 403H 503H 505H 60..