5 Types of Different Quality Inspection Services

What is Quality Inspection Services?

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

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

A Third Party Inspection Service (TPI) is a business organization that 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.

Confidentiality, independence, impartiality, and integrity are essential conditions for being a Third-Party Inspection Service Company.

A third-party inspection company will send an inspector to the supplier’s facilities and perform the different types of inspection based on the inspection standard in a quality inspection.

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 useful tools for every importer when it comes to China or Asia.

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

Please be noted the management will apply the different situations for types of inspection services.

a. First Article Inspection – FAI:

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

The inspection occurs 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.

b. 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 does not respect your approved samples or specification of the pattern.

c. 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 occurs at the factory once about 20%-50% of finished products have come out of the lines. If any 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 avoid delays (repairs and re-inspections will take much more time when problems are noticed after all production is finished.

d. Pre-Shipment Inspection -PSI

You can call PSI a Final Random Inspection. By far, it’s the most common type of quality inspection service based on AQL standards. (Click here to find the right 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.)

e. 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 their quantity is supervised during the supervision, but also the correct packaging and the quality of the goods are inspected.

Suppose the buyer has developed an accurate packing plan. In that case, the loading workers need to follow it very precisely and ensure the accuracy of the packing method under the supervision of the inspector. For example, some cartons are too fragile to be placed on the bottom, or if the packaging is not traditional. For example, some clothes are hung on the bar counter without carton protection.

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

5 types of inspection services, quality inspection services company in ChinaSome 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.

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

There are 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

Author: AQI Service as a professional quality control service company in China specialized in providing a complete range of quality inspection and testing certification services in China & Asia for global importers, buyers, retailers, and sellers.