LED Strip Inspection Services in Shanghai with During Production Inspection

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LED strips pre-shipment inspection carried out by Sunchine Inspection in Guangdong Province. Missing connector / Function test

Water resistant test / Power on check / Remote function check / Work current check

LED strips pre-shipment inspection carried out by Sunchine Inspection in Guangdong Province.

some other defects found during this final random inspection of led strips in Guangdong province impurity / siant edge / poor stitching of tape

Pre-shipment inspection of LED strips performed by Sunchine Inspection in Zhejiang for an European importer Exposed wire / Poor stitch of tape

Pre-shipment inspection of LED strips performed by Sunchine Inspection in Zhejiang for an European importer Function test pics of Sunchine Inspection

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Question: What’s the difference between QA and QC?

Answer : How many times has it struck you that many practitioners involved in the ICT field lack an understanding of the difference between Quality Assurance and Quality Control? Often you will hear someone talk about ‘QA’, when what they actually mean is ‘QC’.

This ambiguity consistently throws up problems and is a sure way of undermining a project. Projects are negatively affected as it tends to lead to strained conversations and makes reaching consensus difficult.

Although QA and QC are closely related concepts, and are both aspects of quality management, they are fundamentally different in their focus:

QC is used to verify the quality of the output;

QA is the process of managing for quality.

Achieving success in a project requires both QA and QC. If we only apply QA, then we have a set of processes that can be applied to ensure great quality in our delivered solution, but the delivered solution itself is never actually quality-checked.
Likewise, if we only focus on QC then we are simply conducting tests without any clear vision for making our tests repeatable, for understanding and eliminating problems in testing, and for generally driving improvement into the means we use to deliver our ICT solutions.

In either case, the delivered solution is unlikely to meet the customer expectation or satisfy the business needs that gave rise to the project in the first place.

Understanding the Difference Between QA and QC

So, what exactly is the difference between Quality Assurance (QA) and Quality Control (QC)?

A good point of reference for understanding the difference is the ISO 9000 family of standards. These standards relate to quality management systems and are designed to help organisations meet the needs of customers and other stakeholders.

In terms of this standard, a quality management system is comprised of quality planning and quality improvement activities, the establishment of a set of quality policies and objectives that will act as guidelines within an organisation, and QA and QC.

In the ISO 9000 standard, clause 3.2.10 defines Quality Control as:
“A part of quality management focused on fulfilling quality requirements”

Clause 3.2.11 defines Quality Assurance as:
“A part of quality management focused on providing confidence that quality requirements will be fulfilled”

These definitions lay a good foundation, but they are too broad and vague to be useful. NASA, one of the most rigorous software engineering firms in the world （Author: Jessica Albert From: Quora）