OEM & Custom Development

ESP32 embedded software development service

OEM & Custom Development Services

WanTong Toys is not only a toy manufacturer — we are also a development partner. Our in-house engineering team turns your product idea into a production-ready toy, from hardware design to certified firmware.

What We Offer

  • ESP32 embedded development — custom firmware for walkie talkies, robots and smart toys. Full source code delivered with each project.
  • Hardware & PCB design — schematic design, PCB layout and prototyping.
  • Industrial design — 3D modeling, appearance design and structural design.
  • OEM production — your branding on our existing products, including retail packaging.
  • ODM production — build an exclusive product from scratch.
  • Certification support — CE, FCC, EN71, ASTM F963, RoHS and related test reports.

Why Source Code Matters

When we develop firmware for you, you own the source code. This means no vendor lock-in, full control over future updates, and the freedom to switch production partners if needed. For brands building long-term products, this is a key advantage.

Our Process

  1. Requirement review — we understand your market, budget and timeline.
  2. Proposal & quotation — technical proposal, cost estimate and schedule.
  3. Prototype — hardware and firmware prototype for your review.
  4. Certification — testing and certification for your target market.
  5. Mass production — QC-controlled manufacturing and on-time delivery.

Let’s Build Your Product

Send us your idea, target market and quantity. We will reply with a feasibility assessment and a cost estimate within 48 hours.

Start Your Project

Past Projects