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The import of a product involves several crucial procedures: Locating the suitable factory, confirming product details and material, production, quality monitoring, packaging and label marking, then finally the loading of goods for delivery.


Overseas importers may not be able to supervise every process. WENTITREL, as an Independent intervention, offers a one-stop service to assist them in selecting the ideal factory whilst monitoring product quality, to protect their interest before shipment leaves for destination.


Our professional inspection expertise enables us conduct checks with scrutiny according to the internationally recognised quality control standards.


During inspection, product sample size is randomly selected according to the well-known international standard: MIL-STD-105E, ANSI/ASQC Z1.4, ABC-STD-105, BS6001, ISO 2859, DIN 40080.


After the selection of product samples from the shipment lot, the inspection will be performed according to the Acceptable Quality Level (AQL) standard.


AQL standard refers to the maximum number of defective that could be considered acceptable during the random sampling of an inspection. The Defects that are found during inspection are classified into 3 levels: Critical, Major and Minor.


We ensure AQL level is agreed between our customers and supplier before production commences.


How to determine the AQL for your products?

Acceptable Quality Level (AQL) sample inspection methods have been proven to be an accurate statistics over a long run. However, the quality level of merchandise at destination might be lower than that of the pre-shipment inspection result. This may due to the transportation process, product handling, humidity, temperature, or etc. We advised our customers to take these issues into consideration when deciding the AQL

level for their products.


The following AQL standard are usually applied unless otherwise instructed by customer.




Customized AQL standards are always welcome.

                                                                                                  Defect Classifications>

Consumer Product

Critical defects

Major defects

Minor defects

no critical defect is accepted

AQL 2.5

AQL 4.0

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