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- Contact: Joyce
- Telephone: +86 137 6030 5313
- WhatsApp: +86 137 6030 5313
- E-mail:Joyce@rainbowdo.com
- No. 2, Dongwangyang Industry, Huangtian Community, Hangcheng Street, Bao'an District, Shenzhen, Guangdong, China
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Reliability Testing for LED Therapy Devices — How We Design a Program That Predicts Field Performance
A product that passes every functional test can still fail in the field. The difference is in how we tested for time.
Functional testing answers the question: does this product work correctly under nominal conditions at the moment of inspection?…
IQC, IPQC, and FQC — Three Inspection Points, Three Different Jobs, One Quality System
A product that passes final inspection but fails in the field was not lacking a quality check. It was lacking the right quality check at the right time.
Quality control is not a single event at the end of a production line. It is a sequence…
First Article Inspection — What It Is, When It Happens, and What We Verify Before a Production Run Begins
The first unit off a production line is not the same as the first unit that will ship to a customer. The difference between them is found in the First Article Inspection.
Before a new product enters mass production, before a new tool or mold…
AQL Inspection Guide — How We Use Acceptable Quality Limits to Make Sampling Decisions That Protect the Customer and the Production Line
Quality cannot be inspected into a product. But inspection can catch what process control missed — if the inspection is designed correctly.
AQL (Acceptable Quality Limit, formerly Acceptable Quality Level) is the cornerstone of statistical…
Waterproof Testing for Beauty Devices — How We Test What “Waterproof” Actually Means
The word “waterproof” is a marketing claim. The IP rating is a technical specification. The difference matters.
When a brand lists a beauty device as “waterproof” or “water-resistant,” it is making a promise to the user about what…