13 Years. 4 Certifications. Zero Lapses.
Quality isn't something we claim.
It's something we prove — every three years, without fail.
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Year of first certification
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Active certifications held simultaneously
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Lapses in 13 years of continuous operation
What Each Certification Means for You
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Every part sourced right. Every step accountable.
The global standard for responsible electronics reuse and recycling.
Your ESG and green procurement requirements — covered. -
Same standard. Every order.
A structured, repeatable quality management system — not ad hoc inspection.
Consistent product quality, accepted by enterprise procurement worldwide. -
Your green procurement. Covered.
Environmental management across sourcing, processing, and fulfilment.
Directly supports your CSR and sustainability reporting obligations. -
An ethical supply chain. Not a promise — a record.
Occupational health and safety, independently verified.
Meets corporate supplier codes of conduct. Reduces your supply chain risk.
All four are independently audited. All four are valid through November 2028.
The Record Behind the Claim
We don't just show you today's certificates.
We show you 13 years of them.
2012 — Where It Started
ISO 9001:2008 · First certification issued 14 November 2012
Audited by Sira Certification Service (UKAS No. 011)
Scope: Development and sales of back light units
Entities: Signal Technology Limited (HK) + Shenzhen Signal Optoelectronic Co., Ltd.
2025 — Four Certifications. Simultaneously.
R2v3 + ISO 9001:2015 + ISO 14001:2015 + ISO 45001:2018
Audited by Perry Johnson Registrars, Inc. (ANAB Accredited)
All valid: 20 November 2025 – 19 November 2028