Desiccant Bag
Industrial Desiccant Bags for Container Moisture Protection | Bulk Wholesale Supplier
Reliable Silica Gel & Clay Desiccant Packets – OEM/ODM from Hebei Factory
Meta Title: Desiccant Bags Manufacturer | Bulk Silica Gel Packets for Shipping Containers – Tang Zhi Technology
Meta Description: Leading exporter of desiccant bags for global trade. Silica gel, clay options in Tyvek/DMF-free packaging. Protect cargo from humidity damage. Factory direct pricing, fast shipping to USA/EU. RFQ today.
Procurement managers know the drill. A container arrives from Asia, but inside, electronics are corroded, pharma packs are clumped, or food goods show mold spots. We've seen it too often in our 15 years exporting to the US and Europe. Moisture doesn't care about your lead times or contracts—it's a silent killer for cargo value.
That's where desiccant bags come in. Not the flimsy ones from discount suppliers. We're talking purpose-built packets that pull humidity down to safe levels, even in 40-foot containers crossing the Pacific. At Tang Zhi Technology (Hebei) Co., Ltd., we pack them ourselves on automated lines right here in Jinzhou. No middlemen, just straight factory output.
Our desiccant bags hit 30-50% RH targets reliably. We've shipped millions to importers handling everything from semiconductors to leather goods. Skip the guesswork—get packets sized for your pallet loads or full TEUs.
Table of Contents
Common Procurement Pitfalls with Desiccant Bags
I've talked to dozens of US buyers who've been burned. They order cheap silica from unverified Alibaba listings. Bags arrive torn, adsorption rates disappoint, or worse—they release dust that contaminates product. One operations manager shared how a $200k electronics shipment went back to the supplier after container rust. Avoidable.
Other headaches: DMF content exceeding EU limits. We've tested competitor bags—many fail REACH compliance quietly. Or non-breathable packaging that traps moisture instead of venting it. Procurement teams waste time on customs holds or rework claims.
Logistics side? Oversized packets wasting space in 20ft containers. Or lead times stretching 8 weeks because the "factory" is really a trader. We've seen importers switch after one bad batch.
- Weak seams bursting mid-voyage.
- Inaccurate moisture capacity claims—lab tested at 30%, performs at 15% in real humidity.
- No customization for cold chain pharma needs.
- Missing food-grade certs for ag exports.
Short take: Vet your supplier like your biggest client. Capacity matters. Compliance too.
How Our Desiccant Bags Solve It
Simple engineering fixes real problems. Our bags use high-grade silica gel or clay cores, encased in Tyvek or microporous paper. Adsorption kicks in fast, holding 25-35% of their weight in water vapor before saturation.
We design for voyage realities—tropical routes from Shanghai to LA, where humidity spikes hit 90%. Bags vent outwards, no back-diffusion. And they're DMF-free across the board, with full test reports on request.
Customization is standard. Need 1g sachets for electronics trays? Or 1kg mega-units for furniture pallets? We OEM to your specs. MOQs start low for trials—500kgs gets you factory pricing.
Product Features That Matter in B2B
Buyers tell us they want reliability over flash. Here's what sets our desiccant bags apart, based on field feedback.
- Core Materials: Type A silica gel (white/non-cob), clay (montmorillonite), or molecular sieve. Choose by application—silica for general, clay for low dust.
- Packaging: Tyvek for tear resistance, paper for eco-preference. All heat-sealed, no loose threads.
- Performance: 200+ hours at 80% RH, lab-verified. Indicators available (orange-to-green shift).
- Safety: RoHS, REACH, food contact compliant (DMF <0.1%).
- Sizing Flexibility: 0.5g to 5kg. Bulk packed in 20kg cartons for container efficiency.
One tweak we've refined: Anti-slip printing on larger bags for stable stacking. Small detail, but contractors notice.
Behind the Scenes: Our Hebei Factory
Tang Zhi Technology sits on 140,000 sqm in Jinzhou, Hebei—90,000 sqm under roof. Automated lines run 24/7, blending desiccant with casing in clean rooms. Annual output tops 5 million units, scaled for peaks like Q4 shipping rushes.
We're not just packagers. In-house labs test adsorption isotherms weekly. Export team handles FOB/CIF to major ports—LA, NY, Rotterdam. 20+ engineers tweak formulations for OEM clients like yours.
Years in cellulose gave us edge in moisture tech—we adapt polymers for custom bags. Global brands trust us; see Shell-level partners.
Technical Specifications Table
| Type | Weight | Adsorption Capacity | Dimensions (cm) | Packaging | Applications |
|---|---|---|---|---|---|
| Silica Gel | 1g - 500g | 30% @ 80% RH | Var. 3x4 to 20x30 | Tyvek/Paper | Electronics |
| Clay Desiccant | 5g - 1kg | 25% @ 70% RH | 5x7 to 25x35 | Non-woven | Pharma/Food |
| Molecular Sieve | 50g - 5kg | 20% @ 60% RH | 10x15 to 40x60 | Tyvek | Precision Optics |
bag of desiccant pva plastic bag bulk pva bag
*Data from in-house testing. Custom sizes available. Lead time: 7-14 days.
Applications Across Industries
We've tuned bags for specific sectors. Electronics importers stack 2g sachets in reel trays—zero condensation on PCBs. Furniture exporters use 500g units under wraps for EU markets.
Pharma? Clay options keep tablets dry through monsoon seasons. Ag products like nuts get food-grade silica to hit US FDA thresholds.
Quick Placement Guide
- Per TEU: 50-100 x 200g bags for general cargo.
- Electronics: 1 bag per carton, plus bulk at doors.
- Cold Chain: Sieve types near temp-sensitive zones.
Pro tip: Layer bags top/middle/bottom. We've modeled diffusion for 40HC voyages—covers it.
Logistics & Delivery Realities
FOB Tianjin/Xingang standard. Full containers optimized—our cartons fit 22 tons without overhang. Air freight for urgent pharma: DHL/UPS rates on request.
US duties? HS 3824.90 covers most. We've handled Section 301 tweaks seamlessly. Track via our portal from Jinzhou gates to your warehouse.
Trials ship in 72 hours. Bulk: 2-3 weeks to West Coast. Watch for peak season surcharges—plan ahead.
Need a loading plan? Email us your container dims—we optimize bag count.
Feedback from Procurement Pros
Mike R., Ops Manager, California Electronics Importer"Switched to Tang Zhi after silica dust issues elsewhere. Bags perform as spec'd—no rejects in 6 months. Fast samples helped seal the deal."
Anna K., Supply Chain Director, Texas Furniture Distributor"500g units saved space vs competitors. Zero moisture claims last season. OEM printing with our logo was seamless—lead time beat quotes."
Raj P., Procurement Lead, New York Pharma Trader"REACH docs were ready Day 1. Clay desiccants spot-on for our gels. Pricing competitive, payment terms flexible for repeat."
Carlos M., Logistics Coordinator, Florida Ag Exporter"Food-grade certs checked out. Bags held up in humid FL storage too. Good partner for scaling orders."
Frequently Asked Questions from Buyers
How many desiccant bags per 20ft container?
Depends on cargo. General: 50 x 200g. Electronics: 150-200 x 50g. We calculate based on your bill of lading.
Are your bags reusable?
Silica can be regenerated via oven at 120°C. Clay less so. We offer reactivation guides.
What's the MOQ for custom printing?
1 million units. Samples first, no charge for plate setup under 5 colors.
Do you provide free samples?
Yes, up to 10kg for testing. Cover courier, we'll ship.
Ready to Protect Your Next Shipment?
Request factory-direct pricing. Talk specs with our engineers. Ships worldwide.
Phone/WhatsApp: +86-15032625168
Email: admin@tangzhicellulose.com
Full Contact →
Or get started: Free sample pack | OEM quote | Container loading plan
About the Author: Li Wei, Export Director at Tang Zhi Technology (Hebei) Co., Ltd.
"20 years in industrial exports, specializing in moisture control for B2B trade."
Room 2308, Dongsheng Plaza 2, No. 508 Zhongshan East Road, Chang’an District, Shijiazhuang, Hebei, China.
