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Materials & Quality Control

The Unspoken Truth About Vacuum Insulation: A Factory Owner’s Guide to Quality Control

If you have been sourcing drinkware for any length of time, you have likely encountered the “6-month problem.” A sample looks perfect when it arrives on your desk. It feels heavy, the paint is flawless, and it keeps your coffee hot. You place a bulk order. But six months later, your customers start complaining that […]

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The B2B Buyer’s Checklist: How to Audit Insulated Bottle Quality Like a Pro

When sourcing from China, a beautiful sample is easy to find, but consistent mass production is where the real challenge lies. For professional buyers, a “good-looking” bottle isn’t enough—it must perform under pressure. At H2DEEK, we don’t just manufacture; we test. If you are auditing a new supplier or checking a batch of samples, here

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