AAMA certification, factory-direct pricing, and a US-based partner who knows the industry. Here's what that actually means for your business.
Most Chinese vinyl extruders either lack AAMA certification, sell exclusively through trading companies, or have no US presence to speak of. Weihui is different on all three counts.
We've been producing profiles for North American window manufacturers for over 20 years. We hold AAMA certification under designation FWH-1 — a publicly verifiable credential that requires rigorous third-party testing and annual inspections. And we have a US team in Oakland, CA ready to handle your calls, questions, and orders without an overseas relay.
The result: you get the pricing advantage of a direct factory relationship, backed by the reliability and accountability of a domestic partner.
| Weihui | Trading Co. | Other CN Extruder | |
|---|---|---|---|
| AAMA Certified | ✓ | — | Rarely |
| Factory-direct pricing | ✓ | ✗ | ✓ |
| US-based support | ✓ | Sometimes | Rarely |
| 20+ yrs NA experience | ✓ | Varies | Varies |
| Custom/OEM profiles | ✓ | ✗ | Varies |
Our FWH-1 designation isn't a self-certification. It requires third-party laboratory testing across impact resistance, dimensional stability, heat resistance, weight tolerance, and color retention — plus at least two unannounced in-plant inspections per year. When you specify Weihui profiles, you can show your customers proof of compliance — not just a claim.
Learn more about our certification →Every layer between you and the factory costs money. Trading companies, distributors, and importers all add margin. When you buy directly from Weihui, that margin stays with you — or gets passed to your customer as a competitive price. The savings compound across volume and become a meaningful business advantage over time.
Most Chinese extruders route all communication through an overseas sales team unfamiliar with North American code requirements, shipping timelines, or the realities of a window fabrication floor. Our Oakland office gives you a contact who understands your world — and can escalate issues directly to the factory when needed, not through a chain of email forwarding.
Profile inconsistency is one of the most disruptive issues for window fabricators — when wall thicknesses drift or color varies batch to batch, it slows your line and creates warranty risk. Our AAMA-mandated Quality Management System, combined with ongoing third-party audits, means you're getting the same profile every order.
If you have a profile that needs to be built to your specification — or you want to own your tooling so competitors can't replicate your product — we can work with you on custom extrusion design and dedicated tooling. We've done this for multiple North American customers and can walk you through the process.
See Our Products →Tell us about your current setup and what you're looking for. We'll give you a straight answer about whether we can help — and what that would look like.