5 Types of Different Quality Inspection Services

What is Quality Inspection Services?

Quality inspection is measures aimed at checking, measuring, or testing of one or more product characteristics and to relate the results to the requirements to confirm compliance.

This task is usually performed by specialised personnel and does not fall within the responsibility of production workers.

A Third Party Inspection Service (TPI) is a business organisation which will be not involved in any activities other than inspection, and product testings, all companies and parties such as buyers, sellers, engineering companies, logistics forwarders, plant owners all have access to these agencies and use their services.

The confidentiality, independence, impartiality and integrity are the essential conditions for being a Third Party Inspection Service Company.

In a quality inspection, a third party inspection company will send an inspector to supplier’s facilities, performed the different type of inspection based on the inspection standard.

5 types of different quality inspection services

Why Should You Conduct a Third-Party Quality Inspection?

A Third-party inspection allows you to:

  • Lead your eyes into factory workshop and quality control system
  • Ensure product quality and safety
  • Avoid late shipments and costly recalls
  • Monitor the manufacturing process
  • Reduce customer issues and complaints.

Please download the Inspection Report Sample here for reference and better understand the third-party inspection services.

How many Types of Inspection Services Do You Know?

Generally, there are five types of quality inspection services, and each one corresponds to a particular step in the production process. They are all part of the useful tools for every importer when it comes to from China or Asia.

Below we would like to summarise the options available to anyone would like to know, as in a visual manner.

Please be noted different situation will be applied for types of inspection services.

First Article Inspection – FAI:

Will attests that all engineering, design and specification requirements are rightly understood, accounted for, verified, and recorded.

The inspection takes place at the factory floor right after the manufacturer starts producing the first mass production samples. A complete, independent, and documented physical and functional inspection process is conducted.

Pre-Production Inspection – PPI:

PPI tells the buyer which kind of raw materials (or components) on the products. Factories are often suspected of lowering their costs by purchasing substandard materials, and this can be disastrous for the buyer (e.g. the wrong kind of chip in an electronic device but you can’t see by visual).

The pre-production inspection also focuses on the processes followed as production starts. Sometimes this can also be critical if the factory not respect your approved samples or specification of the pattern.

During Production Inspection -DPI:

DPI allows the buyer to have an idea of average product quality, early in the production cycle. It is the most useful and the most under-rated tool at the disposal of importers, who often only rely on final inspections.

It usually takes place at the factory once about 20%-50% finished products have come out of the lines. If quality issues are found, what is already produced might be re-workable, and corrective actions can be taken for the rest of the job. It gives buyers the time to plan ahead, and even to avoid delays (repairs and re-inspections take much more time when problems are noticed after all production is finished.

Pre-Shipment Inspection -PSI

You can call PSI as Final Random Inspection too, by far it’s the most common type of quality inspection services based on AQL standard. (Click here to find AQL Sample size)

It takes place once 100% of shipment quantity is finished and at least 80% is packed, so it can be a real random inspection (this is not exactly the case if the quality is checked earlier) and suppliers cannot play games.

It puts pressure on suppliers and gives power to buyers. Its objective is really to confirm a shipment’s quality, rather than catching issues early. Clients always will be advised to complement final inspections with a DUPRO, to avoid finding disasters at the last minute.

(Remark: ANSI/ASQ Z1.4-2003 (R2018): Sampling Procedures and Tables for Inspection by Attributes is an acceptance sampling system to be used with switching rules on a continuing stream of lots for Acceptance Quality Limit (AQL) specified. It provides tightened, normal, and reduced plans to be applied for attributes inspection for percent nonconforming or nonconformities per 100 units.)

Container Loading Supervision:

(Also called Container loading inspection) Ensures that the correct styles, sizes and quantities have been loaded correctly and safely onto the container.

It happens in the manufacturer’s warehouse, or the forwarder’s premises, Not only the loading of the correct products and its quantity are supervised during the supervision but also the correct packaging and the quality of the goods are inspected.

It can be useful if the buyer has a precise loading plan and needs it to be respected very precisely (e.g. some cartons are too fragile to be placed at the bottom), or if the packaging is not conventional (e.g. some garments hung on bars, with no carton protection).

It can also ensure that the right kind of products are shipped out in the right quantity, when the importer places no trust in his supplier or when several suppliers bring their products for consolidation.

Some clients will choose other services: Defects Sorting Service (DSS) or Full inspection (100% Check), it always conducted when the issue was discovered, and defective products need to be separated from acceptable ones. Especially the products selling by B2C or E-commerce Platform like Amazon, Wish or Shopify etc.5 types of inspection services, quality inspection services company in China

More: When you need a Full Inspection Service(100% Defect Sorting Service)?

That’s the five types of inspection services in quality control, and seldom projects require all kinds of inspection. Generally, only one or two of these tools are used, depending on the risks identified by the buyer.

And these quality inspection services are used mostly for consumer goods.

Keywords: China Inspection Services, Inspection Report Sample. Product Inspection Standard