When you're integrating packaging automation into a line, the core decision is often a choice between a straightforward sealer for pre-made pouches and a complete bagging system that prints as it runs. The TECHTONGDA FR-770 continuous sealer and the Autobag HS-100 Excel with PI-4000 in-line printer represent those two approaches.
Quick Verdict
At $352.50, the TECHTONGDA FR-770 is the lower-priced option and is sold as a new unit. At $4,000, the Autobag HS-100 Excel with PI-4000 is the higher-priced, used system that adds automatic bagging and printing to your line. Choose the TECHTONGDA if you need to close smaller pouches; choose the Autobag if you need high-volume automated packaging with printed bags.
Comparison at a Glance
| Feature | TECHTONGDA FR-770 | Autobag HS-100 Excel + PI-4000 |
|---|---|---|
| Price | $352.50 | $4,000.00 |
| Price bar | ||
| Condition | New | Used |
| Power / air | 110V 60Hz | 80 psi air |
| Bag size | 6-12mm seal width | 3" to 22" length, 3" to 10.5" width |
| Throughput | Adjustable conveyor speed | 70 BPM, 30 job memory |
| Printing | Embossing wheel | PI-4000 thermal-transfer printer |
Where Each Product Wins
The TECHTONGDA is the better pick when your line already produces filled pouches and you need a straightforward sealing step. The Autobag is the better pick when you want one machine that automatically bags product and adds printing without a separate labeling operation.
Product Notes
TECHTONGDA FR-770 Continuous Sealer

This sealer runs on 110V 60Hz and uses a conveyor belt to carry pouches through the sealing station. The embossing wheel creates a solid seal with clear imprinting, and the heating block is designed for even heat. The 6-12mm sealing width makes it well suited to smaller pouches but not to large bags. Since it's a new unit, you avoid the wear considerations that come with used equipment. It also has cooling vents to help dissipate heat during longer runs.
Autobag HS-100 Excel Automatic Bagger with PI-4000

This automatic bagging system processes up to 70 bags per minute and stores up to 30 job presets, so switching between product runs is straightforward. The integrated PI-4000 thermal-transfer printer adds barcodes or logos directly to each bag as it's filled, removing a separate labeling operation. It accepts bag lengths from 3" to 22" and widths from 3" to 10.5", with film thicknesses from 1.5 to 4.0 mil. It requires an 80 psi air supply, and because it's a used system, its prior service life is a factor in your purchase decision.
Final Choice by Use Case
For a bench or small line that seals pre-filled pouches, the TECHTONGDA FR-770 is the straightforward fit. For a higher-volume line that needs automatic bagging and integrated printing, the Autobag HS-100 Excel with PI-4000 is the system to pick.