1. Own Factory vs. Trading Company
This is the first question to ask — and the one where suppliers most often lie. A trading company buys from factories and resells to you. They add markup, slow down communication, and cannot control quality at the source. A real manufacturer owns its production facility.
How to verify: Ask for the Safety Production License number. Request a live video call from the production floor — not the showroom. Check if the factory address on the license matches the video location. Real manufacturers are proud to show their operations.
2. Certifications: Real vs. Fake
CE, DOT, ISO 9001 — these certifications matter only if they are genuine and current. Unfortunately, some suppliers display expired or fraudulent certificates. Always verify: request the certificate number and check it against the issuing body's database. If they hesitate or make excuses, walk away.
Critical certifications for fireworks export: CE (EN 15947) for EU, DOT/APA for US, EAC for Russia/Eurasia, ISO 9001 for quality management, DG Packing Certificate for every shipment.
3. Quality Control: Ask for Video, Not Words
Every supplier says they have great QC. Ask for proof. A credible manufacturer will provide: raw material test reports from an independent lab, in-process QC documentation with traceable batch numbers, pre-shipment live-fire testing videos of your actual products.
Red flag: "We test every product — trust us." Trust is earned through documentation, not words.
4. Peak-Season Logistics: The Acid Test
The real test of a fireworks supplier is not your first order — it is your third order during peak season. When DG container space is scarce and every importer is competing for slots, will your supplier deliver on time? Ask about their DG carrier contracts. Do they have annual reserved slots with major carriers like MSC, CMA CGM, or COSCO? Ask for references from clients who ordered during peak season.
5. R&D Capability: Can They Create, Not Just Copy?
If you want to build a brand, you need exclusive products — not the same fireworks every competitor sells. A real OEM partner has an R&D lab with chemists who can develop custom color formulations, unique effect combinations, and market-specific products. Ask: Can you develop an exclusive formula for my market? Will you sign an NDA protecting my formula?
6. Communication: Speed and Language
When a container is stuck at customs or a client finds a quality issue, you need answers in hours, not days. Evaluate: response time to your first inquiry, English proficiency (can they discuss technical specifications without confusion?), availability on WhatsApp/WeChat/email, willingness to take video calls from the production floor.
7. After-Sales: What Happens After the Container Arrives?
Most suppliers disappear after the container ships. A professional OEM partner provides: unboxing inspection guides, damage compensation process (with guaranteed timelines), quality dispute investigation reports, reorder discount programs, proactive compliance updates when regulations change.
8. Client References: The Ultimate Due Diligence
Ask for references from clients in your region. Contact them. Ask: How was product quality? Were deliveries on time during peak season? How were problems handled? Would you order again? A supplier with nothing to hide will gladly provide references. One who hesitates is hiding something.