# Holdum

> Holdum designs, tests and builds child car seats in Zhenjiang, Jiangsu, China — for its own brand and for OEM / ODM clients. ECE R129 (i-Size), ISO 9001, exported since 2023.

This site is a B2B catalogue for brands, distributors and private-label buyers sourcing child restraint systems from a Chinese factory. It is not a consumer retail store.

## About

- [About Holdum](https://360carseats.com/about-us/): company history, scale, markets served and how programmes are run.
- [Our factory](https://360carseats.com/about-us/factory/): 3,000 m² plant in Zhenjiang — shell moulding, fabric cutting, harness assembly, in-line inspection.
- [Quality control](https://360carseats.com/about-us/quality-control/): incoming material checks, inspection gates, batch traceability.
- [Certifications](https://360carseats.com/about-us/certifications/): ECE R129 i-Size approvals under E8, CCC for MY-166, ISO 9001 quality system.
- [Why choose Holdum](https://360carseats.com/about-us/why-choose-us/): tooling, homologation support and delivery terms.
- [Contact](https://360carseats.com/contact/): RFQ form, sales desk, factory visit requests.

## Products

- [Product catalogue](https://360carseats.com/products/): overview of every child car seat platform and category.
- [360 rotating car seats](https://360carseats.com/360-rotating-car-seats/): swivel platforms with ISOFIX docking, 40–150 cm.
- [Convertible & all-in-one car seats](https://360carseats.com/convertible-all-in-one-car-seats/): multi-stage seats spanning infant to booster, 40–150 cm.
- [ISOFIX car seats](https://360carseats.com/isofix-car-seats/): rigid ISOFIX anchorage with top tether or support leg.
- [Infant car seats & carriers](https://360carseats.com/infant-car-seats/): rear-facing carriers for 40–87 cm.
- [i-Size / ECE R129 car seats](https://360carseats.com/i-size-ece-r129-car-seats/): platforms built and type-approved to UN R129.
- [Booster car seats](https://360carseats.com/booster-car-seats/): high-back, foldable and harness boosters, 76–150 cm.

## Product pages

- [Rotating infant car seat MY-166](https://360carseats.com/360-rotating-car-seats/rotating-infant-car-seat/): 40–150 cm, ISOFIX with support leg, one-hand swivel.
- [Rotating convertible car seat MY-266](https://360carseats.com/360-rotating-car-seats/rotating-convertible-car-seat/): 40–150 cm, 360° swivel base, ISOFIX and top tether.
- [3-in-1 rotating car seat BS-188](https://360carseats.com/360-rotating-car-seats/3-in-1-rotating-car-seat/): 40–150 cm, swivel base, multi-stage recline.
- [All-in-one car seat BS-288](https://360carseats.com/convertible-all-in-one-car-seats/all-in-one-car-seat/): 40–150 cm, rear-facing through booster in one shell.
- [3-in-1 car seat BS-188](https://360carseats.com/convertible-all-in-one-car-seats/3-in-1-car-seat/): 40–150 cm, non-rotating multi-stage shell.
- [ISOFIX infant car seat MY-566](https://360carseats.com/isofix-car-seats/isofix-infant-car-seat/): 40–87 cm with rigid click-in base.
- [Newborn car seat MY-566](https://360carseats.com/infant-car-seats/newborn-car-seat/): 40–87 cm, lie-flat recline and newborn insert.
- [Infant carrier car seat MY-566](https://360carseats.com/infant-car-seats/infant-carrier-car-seat/): 40–87 cm, travel-system compatible carrier.
- [i-Size car seat BS-288](https://360carseats.com/i-size-ece-r129-car-seats/i-size-car-seat/): 40–150 cm, four stages, ECE R129 type-approved.
- [High-back booster seat MY-366](https://360carseats.com/booster-car-seats/high-back-booster-seat/): 76–150 cm, adjustable headrest and side wings.
- [Foldable booster seat MY-366](https://360carseats.com/booster-car-seats/foldable-booster-seat/): 76–150 cm, packs flat for retail and freight.
- [Harness booster seat MY-366](https://360carseats.com/booster-car-seats/harness-booster-seat/): 76–150 cm, five-point harness with belt-path guides.

## Manufacturing & supply programmes

- [Capabilities](https://360carseats.com/capabilities/): tooling, injection moulding, fabric engineering, sled validation.
- [OEM car seats](https://360carseats.com/oem-car-seats/): custom tooling and platform licensing from DFM review to homologation.
- [Wholesale car seats](https://360carseats.com/wholesale-car-seats/): factory-direct supply, MOQ and pricing tiers.
- [Branded & private-label car seats](https://360carseats.com/branded-private-label-car-seats/): custom fabrics, badging, manuals, retail packaging.
- [Become a dealer](https://360carseats.com/become-a-dealer/): dealer and distributor program & application.
- [Shipping & logistics](https://360carseats.com/shipping/): container loading plans, FOB Shanghai / Ningbo, export documentation.
- [Case studies](https://360carseats.com/cases/): how OEM programmes are structured.
- [FAQ](https://360carseats.com/faq/): MOQ, sample lead times, documentation, tooling cost, container loading.
- [Blog](https://360carseats.com/blog/): buying guides and sourcing notes for child car seat importers.

## Legal

- [Privacy Policy](https://360carseats.com/privacy-policy/): how personal data submitted through this site is collected, used and stored.

## AI-readable full context

- [llms-full.txt](https://360carseats.com/llms-full.txt): complete machine-readable site context — company, plant, certifications, product specifications, supply terms, full page index.