10+
10+ years experience of developing, bundling and producing Amazon Choice and Best Seller products.
10+ years experience of developing, bundling and producing Amazon Choice and Best Seller products.
20+ years experience of China sourcing, Yiwu market researching and purchasing.
working with 500+ medium and large buyers.
2000+ direct factories network.
save your purchasing cost up to 50%.
80% of new clients choose to work with us.
95% of existing customers have been with us more than 5 years.
100% committed to your order and your business.
As a professional China sourcing company, we offer comprehensive procurement services covering products and suppliers from across China, including the renowned YIWU wholesale Market. Our expertise ensures efficient sourcing, saving you time and money while safeguarding against fraud.
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Product development is the process of transforming your product concept into a commodity, or improving on an existing product into a new product. We will walk you through the entire process
Product bundling here we are talking about involves grouping multiple items into a single package or bundle. Our service extends to customizing packaging for these bundled products, ensuring they meet specific requirements and preferences.

Our team can conduct mid-production inspections, inspections at final delivery, or on-site inspections, even one-by-one to ensure that every product meets your standards. From specifications to functionality, we cover every aspect of quality to ensure customer satisfaction.
We inspect goods to AQL 2.5 or to the standard required by the customer.

Efficient Transportation Solutions: From container and bulk shipments to FBA and 3PL shipments, or door-to-door shipments, we simplify the purchasing process by delivering safely and economically to your door by air, sea or rail.
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We have higher inspection proportion than third-party inspection companies to make sure there is no quality issue when the products arrive in your warehouse.
We always work with the most capable and reliable forwarding companies to make sure the cargo goes through the customs and arrives into your warehouse smoothly.
We get quotations from minimum 3 suppliers to make sure the prices are always competitive.
Our professional sourcing team keeps sending you the latest info and the best selling products in different categories to keep you and your business up with the industry.
We make sure all of our suppliers respond promptly if you have any issue after receiving the orders. A positive atitude from the supplier is critical in our measurement.
We take every single one of you seriously. Whenever there is a problem, we provide solutions in short time.
Submit the inquiry of your needs. We will email you in few hours to assign you an agent to start working together.
We send you the product quotation in two business days or less. Samples will be arranged if necessary.
Confirm all product details with your agent before making a bulk order. Your agent will coordinate with factories, follow up on production, make on-site inspection to make sure everything is on the track.
Collect the products in our warehouse, inspect the quality and arrange courier/sea/air/train shipping to your address, FBA fulfillment center or 3PL warehouse or your address door-to-door.
The reliable path is eight stage-gated steps: (1) validate the need, (2) write a spec and sketch, (3) build a prototype, (4) order an engineering sample, (5) run a small-batch test of 50-200 units, (6) commit tooling and mass production only after the test sells, (7) finalize branding and packaging, and (8) launch. The discipline is to prove the next step with real evidence before funding it, so a wrong bet costs hundreds, not tens of thousands. RND SOURCING runs this ladder with clients in Yiwu and keeps every gate honest.
Most failed launches die because the founder skipped a stage, not because the idea was bad. A stage-gated ladder forces proof at each step before the next dollar is spent.
Each stage has a gate - a piece of evidence that says go or no-go. You do not move on until the gate is met. This is how professional sourcing desks de-risk a new product without betting the company.

A Scandinavian home-organisation brand came to RND SOURCING with a foldable silicone food-cover idea. Instead of tooling immediately, RND SOURCING ran the ladder: a 200-response Reddit poll confirmed the need, a Yiwu silicone workshop built the prototype, then an engineering sample of 1,000 units, then a 150-unit small-batch test sold through a pre-sale landing page.
The test sold out in 11 days. Only then did RND SOURCING commit the client to tooling and an 8,000-unit mass run, consolidated into one Yiwu shipment.
The cost of being wrong climbs steeply at each stage. Gating keeps most mistakes cheap.
Crowdfunding success rate (41.98%) per Statista, January 2025; the majority of unfunded projects reached only 1-20% of their goal - weak validation, not weak execution.

At every stage, ask for the gate evidence before you fund the next step.
Do 100+ real people describe this problem unprompted? If not, stop or rework.
Is the one-page spec signed off with a target landed cost and retail price?
Does a hand-built version actually do the job, even roughly?
Does a workshop-built sample meet the spec and pass a basic QC pass?
Did the 50-200 unit test sell without heavy discounting? Then scale.
Are branding, packaging, and fulfilment ready before the mass run ships?
RND SOURCING sees the same avoidable errors in first-time product launches.

With 20+ years on the ground in Yiwu, RND SOURCING runs the full stage ladder with you - from the first Reddit poll to the mass-run QC - and refuses to let a client tool up on a hunch. We source the right workshop, build the sample, run the small-batch test, and consolidate the shipment so each gate is real, not assumed.
We also flag the seal, material, and packaging issues at sample stage, where they cost cents to fix, not thousands in returns.
Ask RND SOURCING to run your product ladderNegotiate a written production schedule with milestone dates and a penalty clause before you pay: typically 0.5–1% of order value per week of delay beyond a short grace period, with a stated cap. Build a buffer for Chinese New Year — in 2026 the holiday falls on February 17, with factories closing around February 6 and full output not resuming until early March (a ~35-day effective gap) — and for peak-season freight, and structure deposits so leverage stays with you. One documented case shows a January order slipping 11 weeks and costing about $18,000 in lost sales.
A verbal 'about six weeks' is not a schedule. What protects you is a dated plan: tooling cut, first samples, mass start, mass complete, and ready-to-ship — each with a calendar date and a consequence for missing it.
The penalty converts delay from an apology into money. Pair it with deposit structure (a smaller up-front, balance on verified milestones) so you hold leverage if the line slips.

A US Amazon seller planned a Q1 launch and wanted to order in early January 2026. RND SOURCING modeled the Chinese New Year window (Feb 17, 2026; factories closing ~Feb 6, slow ramp into March) and pushed the PO to early December with a written milestone schedule and a 0.8%-per-week penalty.
The goods finished and sailed before the closure. A competitor who ordered in mid-January was still waiting in March — an 11-week slip that industry playbooks estimate at roughly $18,000 in lost sales for a similar SKU.
Chinese New Year is the single biggest lead-time risk of the year. Plan the ~35-day gap, not the one-week holiday.
CNY 2026 dates and ~35-day gap per topchinasourcing / unicargo 2026 lead-time playbooks; penalty range per common OEM contracting practice.

Lock this into the purchase order, not the email thread.
Tooling, samples, mass start, complete, and EXW/FOB ready.
0.5–1% of order value per week late beyond a 5–7 day grace, capped at ~10%.
If shipping Nov–Jan, plan to finish before the ~Feb 6 closure.
Small up-front, balance released on verified milestones, not all up front.
Both languages; reference the penalty in the signed PO.
These are how a 'six-week' order becomes a three-month miss.

RND SOURCING writes the milestone schedule and delay penalty into every OEM PO, books freight before the pre-holiday surge, and inspects the first post-CNY run where defect rates are highest. We hold deposit leverage by releasing balance against verified milestones, not the factory's word.
When a line slips, the penalty clause is already live — so the delay costs the supplier, not just you.
Plan your OEM schedule with RND SOURCING| Element | What to specify |
|---|---|
| Milestone dates | Tooling, samples, mass complete, ready-to-ship |
| Grace period | 5–7 days before penalties start |
| Penalty rate | 0.5–1% of order value per week late |
| Cap | Usually ~10% of order value total |
| CNY buffer | Finish before ~Feb 6 for 2026 |
| Deposit link | Balance released on verified milestones |
Penalty ranges reflect common China OEM contracting practice (2025–2026); adapt the cap to your order size.
An OEM quote usually shows only the ex-factory or FOB unit price, but the real cost adds the BOM (bill of materials), tooling amortization, printing and labels, third-party inspection, China inland freight, and landed cost — ocean freight plus import duties, MPF/HMF fees, broker, and last-mile trucking. On a typical import, landed cost runs about 25–40% above the factory price; one worked example put a $50 FOB unit at $69.63 after a 25% Section 301 duty, MPF, HMF, and trucking. A low unit price with high tooling or poor yield can still lose money once everything is counted.
The factory quote is the start of the math, not the answer. Around it sit costs the factory does not carry: the materials inside the unit, the tooling spread across your volume, the labels and print, the inspection, and the journey to your door.
The two that surprise new importers most are tooling amortization (a big up-front number divided across units) and landed cost (duties + fees that can exceed the freight itself under current Section 301 tariffs).

A US importer modeled a new OEM electronics SKU at a $50 FOB unit price and approved the PO. RND SOURCING built the full landed-cost model before ordering: 25% Section 301 duty on the HTS code, MPF at 0.3464%, HMF at 0.125%, a $250 broker fee, and $1,100 drayage to the warehouse.
The true landed cost came to $69.63 per unit. The buyer re-priced the listing and dropped a planned 3-unit bundle that would have sold below cost.
These are the recurring line items most first quotes omit. US figures reflect 2025–2026 CBP fee schedules and Section 301 tariff practice.
Fee percentages per US CBP schedules (camtomx / supply-chain costing guides, 2025–2026); Section 301 rates vary by HTS code.

Never price off the factory quote alone.
Use FOB, not EXW, so China-side freight is the factory's problem.
Get an LCL/FCL rate to your port from a forwarder.
Find the duty rate and any Section 301 surcharge before quoting.
MPF, HMF, broker, and drayage to your warehouse.
Divide mold cost across forecast units; add inspection and labels.
These are how a 'cheap' unit becomes a loss.

RND SOURCING returns a full landed-cost model with every OEM quote — BOM, tooling amortization, print, inspection, freight, duty, and last-mile — so the number you see is the number you sell against. We also verify your HTS classification to avoid both overpaying duty and under-declaring.
If a low unit price hides high tooling or weak yield, we flag it before you commit, not after the container sails.
Get a landed-cost quote from RND SOURCING| Cost component | Example (1,000 units) |
|---|---|
| Product cost (FOB) | $50.00 / unit |
| Ocean freight (40ft) | $4.20 / unit |
| Import duty (25% Section 301) | $13.61 / unit |
| MPF + HMF | $0.26 / unit |
| Broker + drayage | $1.35 / unit |
| Landed cost | $69.63 / unit |
Illustrative electronics import (HTS 8542.39) per 2025–2026 landed-cost guides; your HTS rate will differ.
Because the sample you approved is typically hand-built by a senior worker using premium material batches, while mass production runs on faster junior lines with different material lots and looser tolerances. The fix is to lock a signed, sealed 'golden sample' as the inspection reference and run pre-shipment inspection (PSI) at an agreed AQL — commonly 2.5 major defects — before the container leaves the factory. Real cases show the gap is not theoretical: one documented order passed as '0.8% defect' in sampling yet arrived at 23% defects, a $47,000 loss (2019 sourcing QC write-up).
The sample and the mass run are made by different processes. Senior hands build the sample slowly and carefully; the production line is optimized for speed and cost, so quality can quietly slide.
Three mechanisms cause most drift: the factory swaps to a cheaper material batch, downgrades the process (e.g., single instead of double stitching), and inspects bulk far more loosely than the sample.

A US housewares buyer approved a golden sample in matte-finish ABS and placed a 12,000-unit run. At 30% completion, RND SOURCING's during-production inspection (DUPRO) found the line had switched to a recycled-content lot with a different filler ratio — glossier and more brittle.
Because the golden sample was sealed and the PO named the material grade, we halted the run, forced a re-grade to the approved batch, and re-inspected. The finished shipment matched the signed sample and passed AQL 2.5.
The numbers explain why 'sample looked fine' is not a quality plan. AQL follows the ISO 2859-1 standard used by SGS, Bureau Veritas, Intertek, and QIMA.
AQL levels per ISO 2859-1; the 0.8%-vs-23% defect gap is drawn from a documented 2019 Bluetooth-speaker QC case study.

Build the reference before you build the run.
Both you and the factory keep a dated, bagged reference unit.
Verify material, hardware, and labels match the sample before cutting.
Catch material or process drift while rework is still cheap.
Write AQL 2.5 major (stricter for kids/safety) into the contract.
Independent pre-shipment inspection against the golden sample, random pull.
These are how buyers discover the gap only at the warehouse.

RND SOURCING seals the golden sample with you, writes the AQL into the purchase order, and runs PPI, DUPRO, and PSI on the Yiwu floor so drift is caught at the cheapest stage. We pull random units from the middle and bottom of sealed cartons — not the line's best.
If a batch fails, we document it with photos and a counted defect report you can act on before the container sails.
Book QC with RND SOURCING| Stage | When | What it catches |
|---|---|---|
| Pre-Production (PPI) | Before cutting | Wrong material, hardware, or label |
| During Production (DUPRO) | At ~30% run | Material swap, process downgrade |
| Pre-Shipment (PSI) | 100% made, 80% packed | Lot-level defects vs golden sample |
| AQL 2.5 major | PSI sampling | Up to ~25 defects per 1,000 units |
Stages follow the standard third-party inspection framework (SGS / Bureau Veritas / Intertek / QIMA).
Almost never. A standard Western NDA only forbids disclosing your secret to a third party — it does not stop the factory from using your design to make its own product or from bypassing you to sell to your customers, and Chinese courts routinely decline to enforce foreign-drafted NDAs. Use a China-law NNN (Non-Disclosure, Non-Use, Non-Circumvention) that is bilingual with the Chinese version controlling, specifies liquidated damages, and names a Chinese court or CIETAC. Documented outcomes: about 62% of foreign-drafted NDA claims are dismissed in China, while roughly 78% of properly drafted NNN claims are upheld (2024 CNIPA / industry data).
A Western NDA answers one question: 'Will you tell someone else?' In China the bigger threats are different — the factory builds your product for itself, or it goes straight to your customers and cuts you out. A standard NDA says nothing about either.
The NNN adds the two missing bars. Non-Use stops the factory from exploiting your design; Non-Circumvention stops it from reaching your customers. Together they cover the scenarios an NDA leaves open.

A European electronics brand shared CAD files with a Yiwu supplier under a US-style NDA translated into Chinese. Two quarters later an identical product appeared on a local B2B platform under the factory's own brand.
RND SOURCING reviewed the file: the NDA covered disclosure only, had no liquidated damages, and named a home-court venue — so it was practically unenforceable. We replaced it with a bilingual NNN under PRC law with a per-breach penalty and a CIETAC clause, and the factory ceased the listing rather than face arbitration.
The enforceability gap is large and well documented. A China IP specialist reports 82% of partnerships using a proper NNN avoid IP disputes, versus 38% relying on an NDA alone.
NDA dismissal and NNN uphold rates per 2024 CNIPA data cited by registrationchina.com; dispute-avoidance rates per GBA IP Lawyer.

Sign it before you share a single file, drawing, or spec.
English plus Chinese, with the Chinese text controlling in any dispute.
Govern by Chinese law; name a Chinese court or CIETAC as venue.
State a specific RMB sum per breach — a genuine pre-estimate, not a penalty.
The red official stamp of the Chinese entity makes the contract valid.
Cover drawings, BOM, firmware, and processes — not just 'schematics'.
These are the reasons a Western NDA fails the moment it matters.

RND SOURCING does not let a factory touch your files until a bilingual, PRC-law NNN with liquidated damages and the company chop is in place. We also pair it with the mold-ownership clause and a China trademark registration so protection is layered, not a single weak sheet.
If a supplier pushes back on the NNN, we treat that as a selection signal and find you a cleaner partner on the Yiwu floor.
Get a China-law NNN through RND SOURCINGThe same factory, two very different protections.