Manufacturer-sourced / No hands-on score
When to consider it
Consider it if two groups of materials need different schedules. Its extra controls only add value if you will use them; a four-spool queue with identical settings may not need two zones.
Check before ordering
Confirm how spools are distributed between zones. Total capacity does not mean every combination of spool width will fit, or that four different recipes can run together.
The published specification is a screening tool. Ask for evidence on any performance characteristic essential to your purchase.
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Check the regional plug, stock, delivered price and returns at the manufacturer.
Source: SUNLU S4 Pro official product information. Checked 13 September 2026. Manufacturer information; not a hands-on test.