ZUOTONG ZTC878 2K Acrylic Polyurethane Clear Coat 2:1 Fast Dry Automotive Refinish for Full Car and Multi Panel Repair

ZUOTONG ZTC878 is a 2K acrylic polyurethane automotive refinish clear coat positioned for full-vehicle work, large panels and multi-panel repairs. It delivers stable levelling, dependable film appearance and a practical balance between finishing quality and workshop timing.

• Large-area positioning — intended for full-car and multi-panel refinishing as well as larger panel work.
• Stable flow and film appearance — consistent levelling and finish quality throughout the job.
• Two-to-three-coat application — uniform coat build with 5-10 minutes intercoat flash-off.
• No added thinner — mix clear coat and hardener at 2:1 by volume; never substitute a weight ratio.
• Baking option — use the specified curing schedule when accelerated processing is required.

1. Check the surface — for ZUOTONG 1K basecoat and other thoroughly dried, sanded paint surfaces; not a bare-metal or bare-plastic primer.
2. Remove contamination — use the specified oil-removal cleaner, then wipe with a clean dust cloth.
3. Confirm the hardener — ZTH878 for cooler conditions, ZTH868 for hot conditions; verify selection for the actual temperature and repair size.
4. Measure 2:1 by volume — e.g. 200 mL clear coat plus 100 mL hardener gives a nominal 300 mL batch; no thinner addition.
5. Mix only what can be applied promptly — pot life approximately 1 hour at 25°C.
6. Set up the gun — gravity-feed nozzle 1.2-1.4 mm, spray pressure 1.8-2.5 bar.
7. Apply 2-3 coats — allow 5-10 minutes of flash-off between coats.
8. Check readiness before polishing — 15-20 minutes dust-free at 25°C, broad polishing window of 1.5-14 hours.
9. Correct only after complete hardening — wet sanding with 1200-2000 grit followed by polishing.

• ZTH878 hardener — low-temperature application direction
• ZTH868 hardener — hot-condition application direction
• ZTC777TZ clear-coat kit — small-repair positioning (use its own product documents)
• Compatible automotive basecoat — confirm the exact model and complete refinish sequence

• A collision repair involving several panels, evaluated as part of the planned clear-coating process after compatible basecoat stages.
• A full-vehicle refinish, where the product is explicitly positioned for this scope.
• A large panel where flow and appearance are priorities, verified through a representative trial under actual shop conditions.

For professional application. Use appropriate protection and follow component SDS requirements, fire precautions and ventilation guidance. Keep away from children.