Heat retention depends on the selected jar, capacity, lid, fill level and use. For a retail programme, we can discuss the available model information and agree what belongs in the product and packing description.
Keep the model and conditions with the figure
A heat-retention figure needs its model and test conditions: starting temperature, fill level, room temperature, duration and the way the lid was used. Ask about the information available for the jar you are considering.
Our food-jar range uses double-wall vacuum stainless construction. We can state the selected material and capacity beside the lid and care details in the quotation.
Planning Custom Logos, Cup Styles or Bulk Orders? Here Is How We Help
Whether you want to put your logo on an in-stock model (from 500 pcs) or develop a new cup shape, one named contact follows your free digital mock-up, physical sample, packing and shipment — with Sales Manager Beyond Lee supervising the full order process. When production starts, the first finished piece is compared against your approved sample before the run continues, and we keep your agreed material, lid and accessory requirements first rather than cutting corners to hit a lower price.
Four details to discuss with the model
1. Fill level. Follow the model's filling guidance. The amount and starting temperature of the food are part of the conditions to consider when discussing retention data.
2. Preparation. Use any preheating instructions supplied for the chosen jar. Include that wording with the care insert rather than promising an extra hour for every model.
3. Capacity. Compare the actual capacity with the portion and carrying brief. Discuss retention information for that model rather than transferring a figure from a different size.
4. Lid use. Opening the lid and the surrounding conditions affect cooling. Keep the use guidance and any stated test conditions with the product information.
Food jars and lunch boxes serve different briefs
Our vacuum food jars can be used for retained-heat cooking such as congee, following the selected jar's instructions. A lunch box holds prepared food and provides heat retention. We can help you choose the category and confirm its use information.
If the enquiry says “thermos lunch box”, send a picture or describe the meal and carrying needs. We can compare a food jar with a lunch box before preparing the quote.
Details to include in a food-jar enquiry
- Opening and utensils. Compare the actual mouth dimensions and the spoon you intend to use on a sample; TW-1006 is one model to consider for a wide-mouth brief.
- Lid and carrying style. Tell us how the jar will be used and packed, and we can suggest suitable lids and arrange a sample for comparison.
- Stated material. Keep the chosen jar's material details with the sample and quotation.
- Packing information. Agree the care wording and any model-specific heat-retention figure with its test conditions before the insert or listing is prepared.
The sizes we actually ship
The range includes seven double-wall vacuum stainless models from 400–800ml. Compare the 400ml TW-1003 with the 800ml TW-1001 or TW-1007 around the portion, opening and carrying brief. The applicable minimum depends on the selected model, colour and decoration; the quote confirms the selected combination.
Frequently asked questions
| Product Line | Core Material & Wall Structure | Standard MOQ | Custom Branding & Packing | Direct Factory Catalog |
|---|---|---|---|---|
| Vacuum Thermos & Insulated Bottles | SUS 304 (18/8) & SUS 316 Double-Wall Vacuum | 500 pcs / model | Laser, 3D UV, Powder Coat, Retail/FBA Box | Thermos Catalog · Custom Guide |
| Travel Mugs, Coffee Cups & Tumblers | SUS 304/316 & Dongrui Inner Ceramic Coating | 500 pcs / model | Silicone Grip, Flip/Straw Lid, Pantone Match | Travel Mugs · Ceramic Line |
| Sports, Shaker & BPA-Free Bottles | Eastman Tritan, PP, Single/Double-Wall SUS 304 | 500 pcs / model | Whisk Ball, Volume Scale, Screen/Heat Transfer | Shakers · BPA-Free · Fitness |
| Titanium, Bamboo, Glass & Gift Sets | 99.9% Titanium, Natural Bamboo, Borosilicate Glass | 500 pcs / sets | Permanent Laser Mark, Custom Gift Box & Inserts | Titanium · Bamboo · Start a Brand |
Planning a drinkware order?
Share the model or product type, quantity, colours, logo and packing you have in mind. We'll confirm the applicable minimum, sample plan and production schedule for that specific order, then help compare delivery options for your destination.
Written by the Jupeng Drinkware team — Yongkang, Zhejiang, China. Manufacturing drinkware since 1998. Contact Beyond: info@jupengcup.com | WhatsApp +86 156 5791 8881