Product Range
Gem dig and excavation kits, crystal growing kits, geology and fossil sets, chemistry experiments, earth and space kits, classroom STEM kits and related science activities.
Science Kit Manufacturer
OEM · ODM · Private Label
Science Kit Manufacturer for OEM, ODM & Private Label STEM Toy Programs
K&M develops and manufactures custom science kits, gem dig kits, geology kits, crystal growing sets, classroom STEM programs, and retail-ready educational toy lines for brands, Amazon sellers, museums, retailers, and school suppliers across 145 countries and regions.
OEM
ODM
Private Label
2,000,000
Pcs / Month
6,000+
Active SKUs
2007
Established
2,000,000
Pcs / Month (Group Total)
145
Countries & Regions
8
STEM Kit Categories
6,000+
Active SKU Catalog
Who This Page Is For
Built for Brands, Importers, Retailers & Educational Toy Buyers
Different buyers have different concerns. Here’s what K&M solves for each type of customer — from Amazon sellers needing FBA-ready packaging to museum curators requiring trilingual guides and classroom pilots.
Amazon Sellers
Low MOQ, FBA label support, material declarations, carton planning, and packaging review for Amazon fulfillment workflows.
Toy Brands
ODM with NDA protection, exclusive tooling, custom experiment themes, branded packaging, and IP-safe product development.
Retail Buyers
Retail-ready packaging, display box options, GS1 barcodes, AQL test reports.
Schools & Museums
Classroom packs, teacher guides, small-batch trial orders for pilot programs.
Product Categories
Science Kits Across 8 Categories — 6,000+ SKU Catalog
Whether you need gem dig kits, crystal growing sets, chemistry experiment kits, or complete classroom STEM programs, our production lines cover the full educational toy spectrum.
| Product Line | Age | Typical Components | Custom Options | Target Market |
|---|---|---|---|---|
| Gem Dig Kits & Excavation Sets | 6+ | Plaster block, genuine stones, brush, chisel, illustrated guidebook | Stone mix & rarity ratio, block shape & size, tool design, packaging graphics | Amazon, retail, party gifts, museums |
| Crystal Growing Kits | 8+ | Crystal powder, growth container, stirrer, display stand, instruction card | Color formula, crystal size, packaging theme, custom instruction booklet | STEM retail, gift shops, educational distributors |
| Geology & Fossil Kits | 6–12 | Minerals, magnifier, specimen ID cards, storage box, dig tool set | Stone selection (12–20 types), booklet design, display tray, branded insert | Museums, schools, nature centers, retail chains |
| Chemistry Experiment Kits | 10+ | Educational-use reagents, measuring cups, spoons, goggles, experiment cards, PPE, SDS review where applicable | Experiment count & theme, manual complexity, SDS documentation, age grading | School supply, STEM toy brands, science clubs |
| Earth & Space Science Kits | 6–10 | Planet models, excavation items, space posters, rock samples, activity cards | Theme customization, planet set composition, insert design, retail packaging | Educational retailers, school programs, museum gift shops |
| Classroom STEM Kits | 8+ | Multi-student material sets, teacher guide, lesson plan, refill pack options | Class size scaling, curriculum alignment, branded teacher manual, refill SKU | Schools, distributors, after-school programs |
| Arts & Crafts Science Kits | 3–8 | Safe art materials, sensory components, creation tools, step-by-step guide | Sensory focus, material safety grade, packaging structure, retail display box | Mass retail, specialty toy stores, gift shops |
| Party & Group Play Sets | 5–12 | Multi-pack excavation sets, shared tools, group activity cards, party favor packs | Party theme, unit count per pack, branded party invitations, retail-ready display | Party supply, e-commerce, retail seasonal programs |
Age-Graded Science Kits
Safe, Hands-On Learning for Every Age Group
Each kit is designed with the target age group’s developmental stage, safety requirements, and learning objectives in mind.
3–5
Ages 3–5
Sensory Discovery Kits
- Large-piece components designed for intended age grading
- Non-toxic materials selected for applicable toy safety limits
- Color, texture & shape recognition
- Supervision guide for parents
- Rounded edges on all tools
Sensory Discovery
6–8
Ages 6–8
Exploration & Observation Kits
- Gem dig, fossil dig, nature exploration
- Patience & classification skills
- Magnifiers, brushes, sorting tools
- Illustrated identification guides
- Dust-controlled plaster blocks
Exploration
8–12
Ages 8–12
Experiment & Discovery Kits
- Crystal growing, chemistry, physics
- Cause-and-effect reasoning
- Experiment recording & data sheets
- Age-appropriate PPE included
- Step-by-step manual with science notes
Experiment
12+
Ages 12+
Advanced STEM Project Kits
- Complex experiment sequences
- Scientific reasoning & analysis
- Detailed safety data sheets (SDS)
- Advanced STEM activity guides
- Custom R&D program support
Advanced STEM
How It Works
From Concept to Container — 6 Steps with Outputs
Every step produces a documented output. Before mass production begins, you receive a confirmed golden sample, packaging artwork, warning labels, carton marks, and a final BOM.
Design · Sample · Source
1
Brief & Concept
Target age, retail price, market, experiment theme, packaging size
Concept sheet + feasibility review
2
Sample Development
Visual / functional / pre-production sample based on your approval stage
Sample unit within 14 days
3
Material Sourcing
Supplier audit, material declaration, batch record, stone sourcing
Material spec sheet + supplier declaration
Produce · Inspect · Ship
4
Mass Production
Line setup, pilot run, golden sample confirmation, in-process QC
Golden sample approved + IPC report
5
QC & Testing
AQL 2.5, critical/major/minor defects, drop test, carton inspection
AQL report + batch traceability
6
Shipping & Docs
FOB / CIF / DDP, FBA labels, pallet plan, destination documents
BL + final inspection photos
Before mass production, we confirm a golden sample, packaging artwork, warning labels, carton marks, and the final BOM — so every production batch matches the approved version.
Safety & Compliance
Compliance Documents We Prepare for Your Market
Compliance is planned by SKU, material, age grade, and target market. Product-level testing and documentation are handled separately from general factory qualifications.
United States — Compliance Requirements
Core Requirements
- ASTM F963-23 for applicable children’s toys manufactured on or after April 20, 2024
- CPSIA: total lead, lead in surface coatings, phthalates, tracking label, and CPC requirements
- CPSC certificate data eFiling for regulated imports, where applicable from July 8, 2026
Documents We Provide
- Children’s Product Certificate (CPC) preparation support
- Third-party lab report coordination with CPSC-accepted or accredited laboratories where required
- SKU-level test summary and material declaration file
- Warning label artwork review and tracking-label file
Important: Testing scope is determined by SKU, material type, age grade, and destination market. For product families, the final test plan should be confirmed with the buyer and the laboratory before mass production.
European Union — Compliance Requirements
Core Requirements
- EN71 Parts 1–3 for mechanical, physical, flammability, and chemical safety requirements
- REACH review for restricted chemical substances where applicable
- CE marking under the EU Toy Safety Directive 2009/48/EC
- Age grading, warning label, and importer information for EU retail
Documents We Provide
- EU Declaration of Conformity (DoC) support
- EN71 test report coordination with accredited laboratories
- REACH statement or report based on product composition
- CE artwork review and importer label file
Important: Factory qualifications do not replace product-level technical documentation. We prepare compliance files by product configuration and market destination.
United Kingdom — GB Market Requirements
Core Requirements
- CE or UKCA marking route for Great Britain, depending on the applicable product rules
- BS EN71-1/2/3 or designated toy safety standards where applicable
- UK REACH review for restricted chemical substances
- UK importer label with responsible party details
Documents We Provide
- CE / UKCA declaration and technical documentation support according to the selected market route
- BS EN71 or equivalent test report coordination
- CE / UKCA label artwork review
- UK importer label template and guidance
Amazon Platform — Compliance Requirements
Core Requirements
- Platform-specific compliance review by category and target marketplace
- FBA inbound planning: unit count, carton weight, carton labels, and pallet configuration
- Warning label visibility and product image review where required
- Test reports and CPC / DoC files prepared for ASIN compliance review when requested
Documents We Provide
- Product image package with required warning-label visibility
- ASTM F963 / EN71 / CPC / DoC document pack based on target marketplace
- FBA carton label and shipment-prep support based on Amazon Seller Central requirements
- SDS and material declarations for chemical-containing kits where applicable
Note: We prepare compliance files before shipment so sellers can respond faster to marketplace document requests and category audits.
Retail Chains — Compliance Requirements
Core Requirements
- Buyer-specific compliance protocol by retail chain and destination market
- AQL sampling inspection at buyer-agreed inspection levels
- Carton drop test and packaging durability verification
- GS1 barcode, retail label, and carton mark file preparation
Documents We Provide
- AQL inspection report per batch
- Carton drop test record or ISTA testing coordination where required
- Packaging specification sheet
- GS1 barcode and label artwork file support
Factory & Quality Control
3 Owned Factories. 1,500+ Suppliers. 2,000,000 Pcs / Month.
We are not a trading company. Every step — from raw material inspection to final carton check — is managed by our own production teams.
3
Owned Factories
1,500+
Global Suppliers
2,000,000
Pcs / Month
K&M has built an integrated business model spanning OEM, ODM, and OBM, with owned factories handling educational toy production across 8 categories. Our supplier network spans 1,500+ partners globally, supporting material traceability and batch consistency.
Trade fair presence: New York Toy Fair · Spielwarenmesse · HK Toys & Games Fair · Canton Fair — Meet us →
Quality Control Process from Gate to Gate
GATE 1
Raw Material Inspection
Every inbound batch of stones, plaster, plastic, packaging material, and reagents is inspected against the BOM.
- Stone size, edge condition, authenticity check
- Plaster hardness and dust level
- Plastic tensile and drop test for tools
GATE 2
In-Process Quality Control
Online inspectors monitor every production line at fixed checkpoints — not just end-of-line.
- IPC at 25%, 50%, 75% completion
- Critical defect detection: choking hazards, sharp points
- Packaging artwork verification against approved proof
GATE 3
AQL Sampling & Final Inspection
AQL sampling is applied by defect class and buyer requirements. Defects are categorized by severity before shipment release.
- Critical defects: 0 tolerance
- Major defects: buyer-agreed AQL level, commonly 1.0–2.5
- Minor defects: buyer-agreed AQL level, commonly 2.5–4.0
- Inspection report shared before shipment
GATE 4
Science Kit-Specific Testing
Beyond standard toy testing, science kits require checks for chemical and mechanical risks.
- Plaster dust and loose-particle review for excavation kits
- Chemical reagent SDS and warning-label review where applicable
- Packaging ink and accessible-material heavy-metal testing under applicable toy standards
GATE 5
Batch Traceability
Every batch receives a unique lot number linking material suppliers, production date, and QC inspector.
- Batch traceability review within 48 hours
- Retention samples kept for 3 years
- QR code or lot stamp on every carton
Proven Track Record
Supply Experience Across Retail, E-Commerce & Educational Channels
We support importers and distributors in North America, Europe, Japan, and Australia with retail-ready packaging, Amazon FBA cartons, and private label STEM toy programs.
Amazon Seller · North America
Amazon-Ready Gem Dig Kit Launch
An Amazon seller launched a gem dig kit line with K&M in 2022. We handled OEM production, retail-ready FBA cartons, carton labeling, inner pack planning, and ASTM F963 document support so the seller could prepare the listing and replenishment plan with fewer packaging and documentation delays.
FBA packaging + compliance document support
Retail Chain · Europe
Private Label Program for European Retail
K&M managed the ODM process: custom stone selection, branded display box, GS1 barcode setup, EN71 documentation, and retail carton specifications for a European store rollout.
Retail packaging · GS1 setup · EN71 support
Museum & Gift Shop · Japan
Earth Science Collection for Museum Gift Program
K&M sourced selected mineral specimens from multiple origins, designed custom packaging, and delivered 6,000 units across 3 SKUs.
6,000 units · 3 SKUs
MOQ, Lead Time & Cost
Transparent Pricing Structure by Order Type
Unit cost is driven by kit size, component count, material selection, packaging structure, instruction pages, testing requirements, and carton configuration.
Existing Design OEM
Logo Printing Only
200–500 units / SKU
- No formula or mold change
- Stock packaging, custom label only
- Barcode file setup
Sample: 7 days
Production: 20–25 days
Private Label OEM
Custom Box & Artwork
500–1,000 units / SKU
- Custom box printing and insert design
- Barcode and retail label file setup
- Custom warning label per market
Sample: 10–14 days
Production: 25–35 days
Full ODM
New Mold & Exclusive Design
1,000–5,000 units / SKU
- Exclusive tooling and custom components
- New material sourcing if required
- IP protection & NDA included
Sample: 14–21 days
Production: 30–45 days
What Drives Your Unit Cost?
Unit cost is usually affected by kit size, number of components, stone or material selection, packaging structure, instruction booklet pages, testing requirements, and carton configuration.
Kit Size & Components
More stones, reagents, or tools means higher material and labor cost
Stone & Material Grade
higher-grade or imported minerals increase per-unit material cost
Packaging Structure
Display box with window vs. simple polybag — different tooling and cost
Instruction Booklet
Trilingual full-color manual vs. single-language insert
Testing Scope
Single market vs. multi-market (US + EU + JP) testing bundle
Carton Configuration
Mixed-SKU cartons for Amazon FBA vs. single-SKU retail pallets
Request a line-item quotation with your specific SKU brief for an accurate price — Get started →
Buyer Information
Practical Project Details
A concise planning summary for private label science kits, classroom STEM programs and custom OEM/ODM projects.
Typical MOQ
Existing design with logo: 200–500 units/SKU. Private label with custom box: 500–1,000 units/SKU. Full ODM or exclusive design: 1,000–5,000 units/SKU.
Samples
Existing design samples: about 7 days. Private label samples: 10–14 days. Full ODM or new-component samples: 14–21 days.
Lead Time
Existing designs: about 20–25 days. Private label orders: 25–35 days. Full ODM and exclusive designs: 30–45 days after approval.
Testing
Testing plans can cover ASTM F963/CPSIA/CPC, EN71/CE/REACH, chemical and mechanical risks, accessible materials and packaging inks.
Packaging
Retail display boxes, custom inserts, multilingual instructions, warning labels, GS1 barcodes, inner packs and Amazon FBA cartons are supported.
Quality Control
BOM-based incoming inspection, approved golden sample, pilot run, in-process QC, packaging checks, final inspection, lot traceability and retained samples.
These are typical planning ranges already used on this site. Final details are confirmed against the approved formula, component list, age grade, packaging and target market.
Questions & Answers
What Buyers Ask Before Starting a Project
What’s the difference between OEM, ODM, and Private Label?
OEM (Original Equipment Manufacturing): You provide the design and packaging; we manufacture. Best for buyers with existing products who need a reliable factory partner. ODM (Original Design Manufacturing): We develop the product from your brief — concept, design, materials, packaging — and you sell it under your brand. Best for brands without in-house R&D. Private Label: We print your brand on our existing designs. Fastest time-to-shelf with minimal investment. MOQ and cost vary by model; see the MOQ section above.
How long does it take from initial brief to first shipment?
For existing designs with logo printing: sample in 7 days, mass production in 20–25 days. For private label with custom packaging: sample in 10–14 days, production in 25–35 days. For full ODM with new mold and exclusive design: sample in 14–21 days, production in 30–45 days. Ocean freight adds 20–40 days depending on destination and season.
What are the payment terms for first-time buyers?
Standard first-order terms: 30% deposit to start production, 70% balance before shipment (T/T). We also accept L/C at sight for established relationships. For established buyers, extended payment terms can be discussed after credit review.
How do you handle product compliance for different markets?
Each project receives a compliance file before mass production. Testing scope is planned by material type, age grade, SKU configuration, and destination market. We coordinate third-party lab reports where required and provide market-specific documentation support, including CPC preparation for the US, DoC + EN71 / REACH files for the EU, CE / UKCA documentation pathway support for Great Britain, and Amazon-ready warning-label artwork for FBA listings.
Can you ship to Amazon FBA warehouses directly?
Yes. We regularly support shipments prepared for Amazon FBA in the US, UK, EU, and Japan. We provide FBA carton-label support, carton count planning, packaging checks, and product image files with required warning-label visibility where applicable. Compliance documents are prepared before shipment so sellers can respond faster to marketplace requests.
What is your minimum order quantity and can it be lower for a trial order?
Standard MOQ is 200–500 units per SKU depending on customization level. For a genuine trial order — where you want to test the market before committing to a full reorder — we can offer a smaller production run on existing stock designs. Ask us specifically; we are often able to accommodate pilot orders below standard MOQ for qualified buyers.
Do you offer IP protection and NDA for exclusive designs?
Yes. For full ODM orders of 1,000+ units per SKU, we sign bilateral NDAs and commit to exclusive tooling — the same mold or packaging design will not be sold to any other client. Exclusive production arrangements can be documented in the purchase contract for the agreed period.
How do you handle quality complaints or product recalls?
Every batch has a unique lot number linking production date, shift, material suppliers, QC inspector, and shipment destination. If a quality issue arises, we review the affected batch based on lot records, retained samples, QC files, and shipment data. We retain sample units for 3 years and can conduct a parallel investigation. For field complaints, we provide root cause analysis reports and corrective action plans according to issue severity and buyer requirements.
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K&M — Science Kit OEM & ODM Factory
Send Your Brief for a Free Quotation
Send us your target SKU, order quantity, target market, and compliance documentation needs. We’ll respond with a detailed quotation within 24 hours on business days.