Glass tea infuser mug manufacturers

The most critical specification is the use of High Borosilicate Glass (3.3 expansion coefficient). This material ensures the mug is thermal shock resistant, allowing it to withstand temperature fluctuations from -20°C to 150°C without cracking. Additionally, ensure the infuser is made of Food-Grade 304 or 316 Stainless Steel to prevent rusting and metallic aftertastes.

For the US market, products must be FDA compliant regarding food contact safety. For the EU, LFGB (Lebensmittel- und Futtermittelgesetzbuch) certification is required. Ensure the glass is BPA-free and Lead-free. If the mug includes a bamboo lid, verify it has a FSC (Forest Stewardship Council) certification and a food-grade silicone seal.

Prioritize laser-cut ultra-fine mesh (0.5mm or smaller) to prevent tea dregs from entering the water. The infuser should have a deep-basket design to allow tea leaves to expand fully for better extraction. Check for reinforced handles using high-temperature bonding techniques to ensure they can support the weight of a full mug (typically 350ml to 500ml) without detachment.

Suppliers on Made-in-China.com usually offer silk-screen printing, laser engraving, or decal printing for logos. You can also request customized color silicone sleeves for heat protection or bespoke gift box packaging to enhance retail value. Minimum Order Quantities (MOQ) for custom logos typically start at 500–1,000 units.

Request 5-layer corrugated export cartons and ensure each unit is protected by EPE foam or bubble wrap inserts. Conduct a Drop Test (ISTA 1A or 2A) before shipment. It is highly recommended to negotiate 1-3% extra spare units or a breakage compensation clause in the contract to cover potential transit damage.

Focus on Total Landed Cost rather than just the unit price. Ask for tiered pricing based on volume (e.g., 1k, 5k, 10k units). Verify the supplier's Production Capacity and Lead Time (usually 25-35 days for bulk). Use the Audit Reports available on Made-in-China.com to confirm if the factory is a genuine manufacturer or a trading company.

Utilize Secured Payment services provided by the platform to hold funds until shipping documents are verified. Always hire a third-party inspection agency (like SGS or V-Trust) to perform a During Production (DUPRO) or Final Random Inspection (FRI) to check for glass bubbles, scratches, and lid fitment before final payment.

Due to the fragile nature and relatively high volume-to-weight ratio, Sea Freight (LCL or FCL) is the most economical for bulk orders. For smaller trial orders, Air Freight with 'Fragile' labeling is faster but significantly more expensive. Ensure the Incoterms (e.g., FOB or CIF) are clearly defined to establish who bears the risk during the main transit leg.