A China-based FTTH fiber optic splice closure factory. We design, injection-mold, assemble and export splice closures, drop cables and ODN accessories to telecom projects across Latin America and beyond.
Ningbo Deju Electronic Technology Co., Ltd. is a specialized manufacturer of fiber optic outdoor enclosures based in Ningbo, Zhejiang — one of China's strongest optical communication manufacturing clusters. Since our founding, we have focused on one product category: fiber optic splice closures and the ODN (Optical Distribution Network) accessories around them.
We are not a trading company. We run our own injection molding workshop, 4 assembly lines and an in-house testing lab. This means we control quality, lead time and cost from raw PP/ABS resin to the finished box shipped to your project site.
Our core product line covers the full range of outdoor fiber joint closures:
Cap-type closures from 12 to 576 cores, mechanical or heat-shrink sealed, for aerial, pole-mount and buried applications.
In-line horizontal closures from 12 to 576 cores, multi-port (1+2 up to 4+4), for duct, direct burial and manhole use.
G.657A1/A2 flat drop cables with 2 or 3 steel wires, white and black, 1km per drum.
Splitters, adapters, pigtails, wall boxes and terminal boxes to complete the outside plant.
We operate 20 injection molding machines ranging from 120T to 400T, producing our own housing shells in UV-stabilized PP, ABS and PC/ABS. No outsourcing of the most critical part of the closure — the waterproof housing. After molding, parts move to our 4 assembly lines where technicians install splice trays, cable glands, gel seals and hardware. Each line runs a dedicated product family so workers become experts in one closure type.
Every lot goes through our in-house test lab before shipment: IP68 water immersion, salt spray, thermal cycling, mechanical impact and drop tests. See our Lab page for details.
Our main market is Latin America. We have delivered FTTH hardware to telecom carriers, contractors and distributors in:
To shorten lead times we hold local stock in Santiago, Chile and Montevideo, Uruguay. See our Warehouse page for delivery times and stock list.
Tell us your target ports, core count and sealing preference. We send samples within 7 days for evaluation.
Your logo on the housing and color box. We can also adapt tray layout, port count and dimensions to your project specs.
15-25 day lead time for 500 pcs. Weekly production reports with photos and test results.
FOB Ningbo or DDP to your nearest port. Local warehouse delivery in Chile/Uruguay in 1-7 days. 15-year experienced support team.
Small, focused and English-speaking. You deal directly with the people who design and pack your order.
12 years in FTTH hardware export. Leads our Latin America business and quotes within 24 hours.
Mechanical engineer, 8 years designing splice closure tooling and sealing systems. Owns new product development.
20 years in injection molding and assembly. Runs the 20-machine workshop and 4 assembly lines. Ensures every lot meets IP68.
Leads incoming and outgoing inspection, test reports and customer follow-up on site quality.