LiUNOVA supplies OEM/ODM steel security doors from verified factories in China, engineered for exterior entry applications requiring enhanced strength, controlled tolerances, and consistent finishing for residential, commercial, and project developments. Ranges include security entry doors, multi-point locking doors, and armoured-style door sets, configurable by door thickness, steel gauge, internal reinforcement, lock type, hinge system, and surface finish. LiUNOVA manages AQL-based QC on fabrication accuracy, weld quality, lock/hinge function, finish consistency, and packing integrity, with CFR / FCL export and consolidation with other doors, windows, and building materials in one LiUNOVA container (scope-dependent).
Technical Overview (Indicative – Compact)
System Types:
- A. Single-leaf security doors (standard entry doors; inward/outward opening)
- B. Double-leaf security doors (main + active leaf; project dependent)
- C. Armoured-style door sets (reinforced leaf and frame; multi-point locking options)
- D. Fire-rated security doors (only where specified and documented; project dependent)
Construction & Materials:
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A. Door leaf: steel skin + internal reinforcement structure (series-dependent)
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B. Frame: formed steel frame with anchors/fixing plates (range-dependent)
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C. Infill (optional): honeycomb/rockwool/PU infill (thermal/acoustic tier dependent)
- D. Seals: perimeter seals and threshold options (project dependent)
Hardware & Security Configuration:
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A. Locking: single-point or multi-point lock cases; cylinder options by market
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B. Cylinders & keys: brass cylinder tiers; master key systems (project dependent)
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C. Hinges: standard or heavy-duty hinges; adjustable hinges (range-dependent)
- D. Security features (optional): anti-pry design, anti-drill plates, anti-cut bolts, peephole/door viewer, chain guard (series-dependent)
Finishes & Aesthetics:
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A. Surface finish: powder coating, transfer printing, PVC film, or painted finishes (range-dependent)
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B. Textures/looks: woodgrain effects, matte textures, metallic looks (series-dependent)
- C. Door design: flush, embossed patterns, glass inserts or side-lites (project dependent)
Sizes & Parameters (Project-Defined):
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A. Door size: width/height, opening direction, frame depth
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B. Wall condition: masonry/steel/RC substrate details for anchor specification
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C. Climate exposure: coastal/high humidity selections for coating tier and hardware grade
- D. Standard requirements: market-specific performance documentation where required
Applications:
- A. Apartments and villas (main entrance doors)
- B. Hotels and serviced apartments (unit entry and service doors)
- C. Commercial buildings (offices, back-of-house, utility access)
- D. Project developments and fit-outs (bulk supply with consistent specification)
QC, OEM & Logistics (via LiUNOVA)
Quality Control:
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A. Dimensional checks: frame squareness, clearances, hinge alignment, lock alignment
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B. Fabrication quality: weld integrity, grinding/edge finishing, reinforcement checks
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C. Hardware function: lock operation, key/cylinder fit, hinge movement, latch engagement
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D. Finish control: coating coverage, colour consistency, defect checks, adhesion risk controls
- E. Packing readiness: corner protection, surface protection film, accessory completeness, carton/crate integrity and labeling
OEM / ODM Support:
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A. Door design: patterns, panel looks, hardware selection, lock tier planning
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B. Branding: logo plates, laser marking, cartons, labels, manuals, installation guides
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C. Project kitting: frames/leaf sets, threshold kits, hardware packs, spare parts (scope-dependent)
- D. Documentation support: packing lists, serial/SKU labeling, inspection records (project dependent)
Logistics & Consolidation:
- A. Shipped mainly under CFR / FCL with export-standard packing and container optimization
- B. Can be consolidated with interior doors, aluminium windows, hardware, tiles, cabinets, and other building materials into one LiUNOVA container (scope-dependent)
At Liunova, we focus on simple and reliable international shipping. All products are shipped directly from China’s major seaports to ports worldwide. Our main goal is to give buyers clear cost, safe transport, and predictable delivery time.
We mainly support the following international shipping terms:
1. CFR (Cost and Freight)
Most Recommended for Buyers
Under CFR, we handle:
- export customs clearance
- trucking from factory to port
- container loading
- sea freight cost
- vessel booking
Buyer only handles:
- destination port charges
- customs clearance in their country
- local delivery to warehouse
This method gives stable cost and easy planning for buyers.
2. FCL (Full Container Load)
Best option for bulk orders
FCL means the container is only for your goods.
It is safer, faster, and cheaper per unit.
We recommend FCL because it offers:
- lower freight cost
- faster customs clearance
- zero mixing with other shipments
- less damage risk
- better packing control
This is the ideal method for serious buyers and repeat orders.
3. LCL (Less than Container Load)
Available but not recommended
We only use LCL for:
- small test orders
- small mixed orders
- first-time sample shipments
Why we do not recommend it:
- higher cost per unit
- risk of mixing with other suppliers
- slower customs clearance
- higher VAT and inspection fees
- more chance of damage or missing cartons
FCL is always the better choice for long-term business.
4. EXW / FOB (Optional on Request)
Available for buyers who want to manage their own freight.
- EXW: Buyer handles pickup from factory
- FOB: We deliver goods to the Chinese port, and buyer pays sea freight
These terms are used less often because CFR and FCL provide better cost control.
Why Source with Liunova?
Discover more in our FAQ
How is Liunova different from a normal sourcing agent?
Most agents focus on price and communication. Liunova is built as an end-to-end quality and compliance partner:
- We start with a technical brief (spec, standards, usage) instead of just a product photo.
- We work only with verified factories that have passed our internal audit.
- Every order is linked to a master specification + approved samples.
- We run independent QC at the factory before goods are shipped.
- We manage export documents and CFR/FCL shipping so the same team controls quality and logistics.
Therefore, you get one responsible partner for the entire process, not multiple disconnected middlemen.
How does your quality control (QC) process work in China?
Liunova uses a multi-stage QC system based on AQL:
- Pre-production – confirm raw materials, trims, tooling, artwork, labels and packaging against the approved spec.
- During-production inspection (DPI) – visit while production is running to check workmanship, dimensions and process control.
- Final random inspection (FRI) – AQL sampling on finished goods (critical / major / minor defects, measurements, appearance, function).
- Packing & labelling check – confirm inner/outer packing, barcodes, shipping marks and palletising.
Each inspection produces a written QC report with photos, measurement tables and defect statistics that you can review before shipment approval.
How do you keep quality stable when using many factories and product categories?
We work with a controlled supplier base, not open-market suppliers:
- New factories go through a vendor approval process (legal check, capacity, machines, export history, key customers).
- We create a Liunova QC checklist for each product type (textiles, machinery, chemicals, building materials, etc.).
- Approved golden samples and lab reports are stored and used as the reference for repeat orders.
- Supplier performance (defect rate, on-time delivery, response speed) is tracked so that poor-performing factories are corrected or replaced.
This turns a fragmented China supply base into a managed, measurable network for our clients.
Can I see QC reports, test results and photos before shipment?
Yes. Transparency is a core part of our model:
- For each inspected order you receive a full QC report with:
- Inspection date, location and AQL level
- Photos of goods, labels, packing and any defects
- Measurement sheets and functional test results
- Where lab testing is required (e.g. OEKO-TEX, REACH-related, CE-type tests), we share copies of certificates and test reports.
No shipment is released without your written confirmation when critical issues are found.
How do you handle non-conforming or failed inspections?
If an order fails our agreed QC criteria:
- The shipment is put on hold and the buyer is informed immediately.
- We issue a non-conformity report listing the exact problems and root-cause feedback from the factory.
- Corrective actions can include rework, sorting, replacement production or commercial compensation, depending on severity and timing.
- A re-inspection is arranged to confirm that corrective actions were effective before goods are loaded.
This process protects you from quietly shipped problem goods and surprise claims at destination.
How do you manage compliance (CE, REACH, OEKO-TEX, FDA, etc.) for different products?
Compliance is treated as part of QC, not an afterthought:
- During factory approval we check existing certificates and test reports for scope, validity dates and issuing bodies.
- For new projects we align product spec, test plan and documentation at the quotation stage (not after production).
- Where required, we coordinate third-party lab testing and ensure reports match the exact product and batch produced.
- For chemicals and lubricants we ensure MSDS/TDS, hazard labelling and UN packaging are correctly prepared before shipment.
This reduces the risk of customs issues, retailer rejections and liability problems in your home market.
What part of QC is linked to packing, loading and shipping?
Quality does not stop at the factory gate. Liunova also controls:
- Carton strength, packing method and palletising to reduce transit damage.
- Container loading checks (for key projects) to verify carton count, container condition and securing of cargo.
- Accuracy of export documents (CI, PL, HS codes, weight/volume) to avoid customs queries and port delays.
Because we combine QC + CFR/FCL logistics, we can track your order from production line to port, giving a more secure and professional sourcing experience than simple price-based agents.
