Grandtop Group was founded with a simple but ambitious goal — to be the manufacturing partner that brands could actually rely on. No surprises. No quality shortcuts. No excuses. Over the past 20 years, we’ve grown from a focused swimwear operation into a full-service OEM manufacturer producing thousands of styles annually for fashion brands, athletic labels, and retailers across the globe. Our factory in Vietnam combines skilled craftsmanship with advanced production technology — digital cutting systems, standardized production lines, and rigorous multi-stage quality control — to deliver garments that perform as good as they look.
We partner with brands at every stage — from founders launching their first collection to established retailers scaling private label lines. What they all have in common is a demand for quality, reliability, and a manufacturing partner who communicates clearly and delivers consistently.
From technical pattern development to final inspection, every step of our production process is built around accuracy. Your sample is your contract — and we honor it in bulk.
We know how frustrating it can be to work across time zones. That’s why we have US-based account management to ensure you always have someone responsive, professional, and knowledgeable on your side.
We believe the best factory relationships are built on honesty. We’ll tell you what’s possible, what’s not, and what we recommend — so you can make informed decisions at every stage of your project.
Swimwear and activewear are among the most technically demanding categories in apparel. Construction, fit, fabric performance, and durability all have to work together perfectly. We’ve spent two decades mastering exactly that.
To be the manufacturing partner that makes your brand better — not just a factory that fills orders, but a team that’s genuinely invested in your success.
