Choose by configuration
The main differences are the tablet mechanism and the complete base. YZ668-3D lists a detachable and folding tablet holder with soft glides. YZ668-16 lists a rotating tablet, storage base and PU casters. YZ668-17 lists a rotating tablet with a different steel base reference. A similar shell does not make these configurations interchangeable.
YZ668-3D uses an ABS tablet with a detachable and folding holder, a 32 mm solid aluminum alloy tablet mechanism and a powder-coated metal tube base. Soft glides are included in its listed specification.
Evaluate this model when your brief prioritizes a folding writing support. Check the usable tablet area, approach to the seat and handling of the holder on the actual sample.
YZ668-16 lists an ABS tablet reference of 493 × 320 × 18 mm, 360° tablet rotation, 50 mm PU casters and a storage base. The 5.4 kg figure belongs to the storage assembly; it is not a whole-chair weight.
Evaluate this model when a mobile chair with a storage base fits the learning activity. Check floor suitability, movement around neighboring chairs and the assembled footprint.
YZ668-17 lists an ABS writing tablet, 360° rotation with bearings and a 60 mm steel-frame base reference. The 493 × 320 × 18 mm tablet measurement is subject to the selected configuration. Its base differs from the YZ668-16 storage assembly.
Evaluate this model for a lecture or learning layout that needs its particular base arrangement. Confirm the installation requirements, drawing revision and writing-tablet configuration before specifying a room.
Measurements refer to the named part or assembly. An unlisted detail needs confirmation; it does not mean the feature is unavailable.
| Selection detail | YZ668-3DTablet training chair | YZ668-16Tablet student chair | YZ668-17Lecture chair |
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| Writing surface |
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| Tablet movement and support |
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| Base construction |
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| Casters and floor contact |
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| Not listed in this model’s current specification. Confirm the selected configuration. |
| Other listed details |
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| Minimum order reference | 30 pcs | 30 pcs | 20 sets |
| Production lead-time reference | 15 days; confirm the schedule in the quotation. Shipping transit is separate. | 15 days; confirm the schedule in the quotation. Shipping transit is separate. | 20 days; confirm the schedule in the quotation. Shipping transit is separate. |
| Specifications and original records |
The records do not establish an identical complete writing assembly. YZ668-3D describes a detachable and folding holder; YZ668-16 and YZ668-17 describe 360° rotation. Compare the tablet, support and mechanism together, and confirm the selected dimensions instead of transferring a measurement between models.
A room layout needs the overall chair footprint, entry clearance and space used when the tablet moves. A tablet dimension alone cannot provide those measurements. Request the configuration drawing and review a sample in the intended arrangement, including the aisle and access around neighboring seats.
A shared series name does not establish shared test coverage. Match the full model suffix, sample configuration and test clauses to the original report. The product pages separate exact-model records from related documents; use that distinction when assembling your purchasing documents.
Send the model, configuration, quantity and destination with your room plan. Keep the selected drawing and required documents together when you review a quotation.