Longmax Industries delivers turnkey EMS — concept design, precision tooling, plastic injection, PCB assembly, functional testing, and global logistics — from plants in Hong Kong, Dongguan, and Vietnam.
A short tour of our facilities, capabilities, and the team behind your products.
IATF 16949, ISO 9001 and ISO 14001 accredited, with a field return rate under 0.05% — quality is engineered into every stage.
One accountable partner from concept to delivery, keeping cost, quality, and schedule in your control.
30+ R&D engineers and a workforce skilled across design, engineering, production, and quality assurance.
Honesty and fairness are non-negotiable — we protect your intellectual property without exception.
Design-for-manufacturing expertise and continuous improvement keep your products ahead of the curve.
Over 90% of our clients come through referrals — we build long-term relationships, not one-off jobs.
Longmax was founded in 1994 in Hong Kong and has grown into one of the city's leading Electronics Manufacturing Services providers. We deliver turnkey OEM solutions worldwide, with project management discipline that keeps quality, delivery, and cost in our customers' control.
Our scope covers design, circuit fabrication, injection mold design and building, plastic injection, die-casting, PCB assembly, final system assembly, functional and reliability testing, compliance certification, packaging, and logistics.
From your first sketch to global delivery, Longmax handles every layer of the product lifecycle. We control quality, delivery, and cost so you can focus on the product.
Tailored EMS solutions across five verticals, from communication products to commercial security and wellness electronics.
Whether you bring a sketch or a finished spec, our engineers will help you move from concept to mass production.
