Ningbo Deju Electronic Technology — Fiber Optic Splice Closure Manufacturer
ISO 9001 · CE · ROHS · IP68

Fiber Optic
Splice Closure
Manufacturer

12–576 core dome & horizontal closures. Mechanical and heat-shrink seal. Factory direct from Ningbo, China — shipping to Latin America, South East Asia and Africa.

7+ yrs
Since 2018
50K+
PCS Monthly Output
200+
Global Buyers
8
Countries Served
Browse by Capacity

Splice Closure by Core Count

From small FTTH drop closures to large 576-core underground enclosures — pick the capacity that matches your network.

12
CORE
Mini FTTH drop closure
24
CORE
Small dome / horizontal
48
CORE
Most popular FTTX size
96
CORE
Aerial / duct
144
CORE
Multi-port distribution
288
CORE
Large capacity backbone
576
CORE
Super high-density
Custom
ODM
Your own design
Featured

Best-Selling Closures

Our top three product lines, shipped every week to distributors and system integrators.

Black dome fiber optic splice closure

Dome Vertical Closure

12–288 core, mechanical seal, aerial / buried / duct installation. UV-stabilized PP housing.

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Horizontal inline fiber optic splice closure

Horizontal Inline Closure

24–576 core, 3-inlet / 3-outlet up to 6-in / 6-out. Ideal for long-haul trunk lines.

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Heat shrink sealed dome closure with mount

Heat-Shrink Dome Closure

48–144 core, one-time seal, cost-effective for rural aerial deployments. Includes mounting bracket.

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Why Deju

Factory-Direct.
Tested Outdoors.
Built to Last.

✓

IP68 Waterproof Tested

Every batch passes submersion and pressure tests before packing.

✓

OEM / Private Label

Your logo, your color box, your spec. MOQ 50 pcs, 15-day lead time.

✓

Spanish-Speaking Team

We serve Latin America directly — Chile, Peru, Brazil, Ecuador, Argentina, Colombia.

✓

Overseas Stock

Warehouses in Chile and Uruguay. Local delivery in 1–7 days for urgent orders.

DEJU factory exterior Ningbo China
Inside Our Factory

Injection · Assembly · QC

20 injection molding machines, 4 assembly lines, and an in-house test lab — all under one roof in Ningbo.

Injection molding workshop Assembly line workers Field installation on utility pole

Need a Quote for Your Next Project?

Send us your spec sheet or target model — we reply within 1 working day.

Email [email protected]
Contact us