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Formulated with international advanced epoxy chemistry, it is exclusively designed for steel, aluminum, stainless steel, and galvanized steel substrates—excluding wood and plastic—and is available in three core colors (white, grey, black) to match diverse pre-coating preparation needs. Whether for full-panel automotive refinishes or industrial metal component protection, this 2K epoxy primer for automotive use provides a durable, rust-resistant base layer that ensures long-term performance of topcoats, making it a staple in professional coating workflows.
The two-component epoxy formulation forms a molecular-level bond with metal substrates, providing excellent rust protection. It withstands harsh environmental conditions such as moisture, humidity, and chemical exposure. The primer adheres strongly to a wide range of metal substrates, including polished steel, aluminum, galvanized steel, zinc, copper, and brass, eliminating peeling or chipping even after long-term use.
This primer is optimized for 320#-400# grit sanded metal surfaces, making it the perfect 2K epoxy primer for steel, aluminum, galvanized steel, and other metal types commonly used in industrial and automotive applications. The primer supports standardized surface preparation processes in professional workshops and ensures consistent coating results across different metals.
With a predictable pot life and clear mixing ratios, this primer is ideal for high-efficiency production workflows. Under temperatures of 60°C, the primer features a fast dust-free time and short polishing window, whether air-dried or baked. This helps reduce production downtime. The 2-coat application with a 5-minute flash-off time ensures uniform film formation and eliminates pinholes.
The Z9708W/G/B primer is designed to work with Zuotong’s ZK103 universal hardeners and ZK105 epoxy thinner. It adapts to different construction temperatures and workshop conditions, offering flexibility for both large-scale industrial spraying and small-batch automotive refinishing. The combination of the hardener and thinner ensures optimal curing and performance in various environments.
Specification | Details |
System Components | Z9708W/G/B Primer + Z9288H/Z9288BT Hardener + ZK103/ZK105 Thinner |
Mixing Ratio (weightZ9288H Hardener) | Z9288 Primer : Z9288H Hardener : Thinner =4:1:1.5-2.5 |
Mixing Ratio (volume) | Z9288 Primer : Z9288BT Hardener : Thinner =4:1:2.5-4 |
Pot Life (25°C) | Approx. 4 hours |
Spray Gun Type | Gravity-feed |
Nozzle Size | 1.5-1.7 mm |
Air Pressure | 2-3 bar |
Application Method | 2 coats, 5min flash-off at 25°C |
| Dust-free Time (25°C) | 15 min |
| Polishing Time (25°C) | 4 hours |
Dust-free Time (60°C) | 5 min |
Polishing Time (60°C) | 30 min |
Post-Cure Sanding Grit | 600# grit sandpaper (before primer surfacer) |
Compatible Substrates | Steel, aluminum, stainless steel, galvanized steel (320#-400# sanded) |
Zuotong leverages international automotive coating technology to develop all products, and the Z9708W/G/B 2K Epoxy Primer is strictly tested for professional use only—meeting the high standards of clients such as automotive refinish chains, industrial manufacturers, and coating distributors.
We understand the efficiency needs of professional workshops and industrial production lines. Our product’s clear technical parameters, standardized application processes, and compatible auxiliary products (hardeners, thinners) create a one-stop coating solution, reducing the complexity of material matching for clients.
Each batch of primer is manufactured under strict quality control, ensuring consistent mixing ratios and curing performance. With a 2-year shelf life in unopened original containers, it is suitable for bulk stock by distributors and large enterprises, avoiding waste from short shelf life.
We provide exclusive technical guidance for clients, including surface preparation, mixing, and application optimization. Our professional team is available to solve on-site construction problems, ensuring that clients maximize the performance of our 2K epoxy primer.
The Z9708W/G/B 2K Epoxy Primer is supplied in industrial-grade packaging: 3.75L per can, 4 cans per carton (3.75L*4/CTN). The sturdy carton packaging ensures safe transportation for bulk wholesale, preventing leakage or damage during long-distance shipping.
We offer flexible wholesale MOQs for coating distributors, automotive repair chains, and industrial manufacturers, with preferential bulk pricing for large-quantity orders. Customized packaging solutions are also available for long-term cooperative clients to match their brand and distribution needs.
For optimal performance, store the primer in a cool, dry, well-ventilated area away from direct sunlight and open flames. Unopened products retain their performance for 2 years, and we provide batch tracking for all wholesale orders to ensure product freshness.
Zuotong has a mature international supply chain, supporting door-to-door delivery for global clients. We ensure on-time delivery and stable inventory for regular wholesale clients, meeting the continuous production needs of automotive and industrial sectors.
