FAQ

We have cream charger line to cover the full 0.3L to 6.0L range (0.3L, 0.52L, 0.95L, 2.2L, 2.7L, 3.3L, 4.5L, 5.5L and more), Recommended: 0.95L/640g, 2.2L/1364g, 3.3L 2000,all built to ISO 11118 as disposable non-refillable steel cylinders with customizable colors and OEM/ODM options. 

Only food-grade nitrous oxide (E942) with a minimum purity of 99.95%. There are no oils, lubricants, propellants or residual chemicals inside the cartridge.

One  charger whips approximately 0.95 L of fresh cream. A 580g cylinder is equivalent to about 72 standard chargers, a 615g or 640g cylinder to about 77 to 80, and a 2000g cylinder to about 250.

2000g chargers are made of food-grade recyclable carbon steel with a zinc or lacquer lining, and the larger cylinders are recyclable steel tanks fitted with a precision pressure valve.

When stored in a cool, dry place away from direct sunlight, our sealed Cream Charger have a shelf life of at least 5 years and the steel cylinders of at least 3 years. Nitrous oxide itself does not degrade; the shelf life reflects seal integrity.

Yes. In addition to pure, tasteless N2O, we produce flavored chargers and cylinders such as strawberry, Vanilla, chocolate, lemon, Orange, mint, blueberry and pistachio. The food-grade flavoring is sealed in the headspace and only carries aroma into the cream.

Yes. Professional kitchens use them for espumas, mousses, infused foams, sauces, cocktails and molecular gastronomy preparations. They are intended for food preparation only and must never be inhaled.

Yes. Ronghai 580g to 2000g cylinders use the industry-standard valve interface and connect directly to the common N2O pressure regulators and dispenser hoses used in the market.

No. Each cartridge is cleaned and sealed on a controlled filling line, and the inner lining prevents contact between the gas and bare steel. Taste tests and batch gas-chromatography purity checks confirm there is no metallic or oily aftertaste.

Yes. Every cylinder is batch-coded and 100% leak-tested; we perform hydrostatic testing and random burst tests per ISO 11118, under ISO 9001 quality management. Each unit carries an inspection mark and batch number for traceability.

Absolutely. Private label and OEM manufacturing are core services of ours. We can print your logo, apply your packaging artwork and even customize cylinder colors, caps and flavor cards to match your brand identity.

For fully customized Cream charger packaging, the MOQ starts at one 20-foot container, with mixed SKUs allowed. For large cylinders, the MOQ is typically 500 units per size for custom labels and one 20-foot container for fully custom-printed cartons. Your sales manager will confirm the exact figures for your project.

• Logo and artwork printing on chargers and cylinders
• Gift box and master carton design
• Cylinder body color, cap and nozzle color
• Flavor selection and multilingual manuals
• Barcode/EAN labels and pallet marking

Please provide vector files in AI, EPS or print-ready PDF format in CMYK with all text converted to outlines. We supply the exact dieline templates and safe-zone guides so your designer can set the artwork up correctly.

After artwork and pre-production sample approval, standard OEM production takes 25 to 35 working days depending on order volume and customization level. Peak-season orders should be booked 2 to 3 weeks earlier.

Standard private-label printing uses free tooling. A small printing-plate fee may apply to fully custom gift-box designs; it is refunded once your cumulative order volume reaches the agreed threshold.

Yes. We produce digital mock-ups within 2 to 3 days and physical pre-production samples within 7 to 10 days. Mass production starts only after your written sign-off, and the sample fee is refundable against the bulk order.

Yes. Our in-house designers provide free dieline templates, layout suggestions and up to three rounds of revisions per project. You keep full ownership of the final artwork.

We offer the full flavored N2O range for private label and can adjust printed specifications, lot coding and multilingual manual content. Gas purity is standardized at food-grade E942 with a minimum of 99.95%, supported by a batch COA.

Yes. We are happy to sign an NDA before sharing any sensitive information. Custom molds, artwork and formulations are never reused for other customers, and production over-runs are destroyed rather than resold.

Regular wholesale orders start at 100 cartons per SKU, and there is no upper limit. Container orders (20ft or 40ft HQ) receive the best unit pricing, and mixed models or flavors are welcome.

Yes. Pricing is tiered by order volume and partnership level, and qualified distributors receive annual rebates, marketing support and regional protection. Send us your target quantities and we will quote within 24 hours.

For bulk production we accept T/T with a 30% deposit and 70% balance against the bill of lading copy, or an irrevocable L/C at sight. Sample and small orders can be paid via PayPal, Western Union or trade-assurance platforms.

Yes. Stocked samples are dispatched within 3 working days and usually arrive in 5 to 7 days by express. Sample and freight charges are refundable once the first bulk order is confirmed.

Exclusive distribution in a defined country or region is available after a short trial-order period and a signed annual volume commitment. Contact our sales team to discuss the terms for your market.

We regularly quote EXW, FOB, CFR and CIF and, for selected destinations, DDP or DDU. Your sales manager will recommend the most suitable Incoterm based on your destination and customs capability.

The 640g/0.95L chargers are packed in retail boxes (usually 1/2/3 pieces), and the 2000/3.3L chargers are packed in retail boxes (usually 1 piece). After being loaded into the main export box, they are palletized and sealed with shrink film for sea transportation. We can also provide customized retail packaging through OEM services.

Standard SKUs are kept as safety stock, so repeat orders of regular specifications can usually be loaded within 7 to 15 working days. Fully custom items follow the standard 25 to 35 day production cycle.

Yes. Mixed-container loading is supported as long as each SKU meets its minimum quantity. Our logistics team plans the loading plan to maximize container usage at no extra cost.

Every shipment is covered by our quality guarantee. Report any defects with photos within 30 days of arrival and approved claims are compensated with free goods, spare units or credit on your next order. We also supply product images, catalogs and sales sheets for your marketing.

For CIF terms, due to commodity inspection by customs, it usually takes 7 to 15 days to ship to your freight forwarder after production is completed. Total door-to-door transit is typically 25 to 40 days depending on the destination port.

Bulk orders ship by sea as FCL or LCL; urgent small orders and samples can go by international express (DHL, FedEx, UPS). Rail transport is also available for certain European and Central Asian destinations.

N2O ships under UN 1070 as a Class 2.2 non-flammable, non-toxic compressed gas, with the applicable oxidizer (5.1) subsidiary handling requirements. All cartons, cylinders and pallets carry the correct dangerous-goods marks and labels.

Yes. We supply the full document package, including SDS/MSDS, dangerous-goods declaration, IMO declaration, packing list, commercial invoice, certificate of origin and bill of lading, through qualified dangerous-goods forwarders.

Depending on the production line and your destination, we normally load at Qingdao, Tianjin, Shanghai, Ningbo. Your sales manager will nominate the most cost-effective port for each order.

Yes, for most major markets we can arrange DDP or DDU delivery using our network of dangerous-goods-qualified forwarders and customs brokers. DDP availability and surcharges are confirmed per destination at quotation stage.

Products are packed in five-layer export cartons, palletized on heat-treated (ISPM 15) pallets, strapped and shrink-wrapped. Container-loading photos are shared before sealing so you can verify the stowage.

Import rules for pressurized gas and food additives differ by country. The importer is responsible for local import permits, and our compliance team shares the specifications, labels and certificates needed to support your registration.

Freight is based on the Incoterm selected, total carton volume, gross weight and destination. Send us your delivery address or nearest port and we will provide an itemized freight quotation within 24 hours.

Inspect the container and cartons on arrival and note any visible damage on the carrier receipt. Report concealed damage with dated photos within 7 days; we will support the insurance claim and arrange replacement production immediately for confirmed losses.

Our factories operate under ISO 9001 quality management and HACCP/FSSC 22000 food-safety systems, and the gas and pressure containers are produced under TPED and applicable international transport requirements. Full certificates are available from your sales manager.

Yes. The gas is certified food additive E942 with a minimum purity of 99.95%, produced and filled under food-safety controls. Every production batch is tested for purity and moisture and comes with a batch COA.

• Certificate of origin and commercial invoice
• Packing list and bill of lading
• SDS/MSDS and batch COA
• Food-grade statement
• Health/free-sale and third-party inspection certificates where required

Yes. Cylinders are manufactured under the EU TPED framework for transportable pressure equipment and meet the applicable UN cylinder requirements; U.S.-bound shipments follow the relevant DOT transport provisions.

Nitrous oxide is recognized as a food additive under FDA 21 CFR 184.1545. Our food-grade E942 is produced to support U.S. market entry, and we provide the purity and manufacturing documentation your importer or counsel may require.

Food-grade documentation can be extended with Halal- or Kosher-related statements where the specific production batch and issuing program supports them. Tell us your market requirement at quotation stage so we can confirm the available documentation.

• Gas-chromatography purity testing
• Moisture content testing
• Net-weight and fill checks
• Pressure and leak testing
• Burst sampling on cartridge steel
• Visual and printing inspection

Each carton and cylinder lot carries a printed batch number linked to the raw-material records, filling-line logs, QC reports and COA. Any unit can be traced back to its exact production run within minutes.

Products are labeled for professional and domestic food-preparation use only, with safety warnings and proper-use instructions. We support markets with additional age-warning or misuse-warning label requirements and sell through legitimate food-service and retail channels.

Yes. We welcome on-site audits and regularly support independent third-party inspections by SGS, Bureau Veritas and similar agencies. Audit scheduling, BSCI/social-compliance documentation and virtual factory tours can be arranged through your sales manager.