Supplier Information

WhiteStone Technology operates a Quality Management System (QMS) certified in accordance with the UNE-EN ISO 9001:2015 standard. As part of this system, and in accordance with clause 8.4 of the standard, all suppliers that provide products or services to WhiteStone Technology are subject to a formal and periodic evaluation.

Evaluation methodology

Supplier evaluations are carried out on an annual basis, and on a half-yearly basis for suppliers considered critical to the quality of the service provided by the organisation.

The main criteria applied in the evaluation are:


Quality of the product or service supplied, assessed according to its conformity with the technical requirements and the agreed specifications.
Compliance with delivery or service provision deadlines.
Demonstrated technical capability within the scope of the supply.
Responsiveness to enquiries, incidents and requests.
Regulatory compliance, including, where applicable, the requirements of the General Data Protection Regulation (GDPR).
Value for money of the supply.
Environmental sustainability criteria, assessed where applicable to the nature of the product or service.

As a result of the evaluation, each supplier receives a rating that determines its continuity on the organisation’s list of approved suppliers:

RatingDescription
A — ExcellentMeets or exceeds expectations. Preferred supplier.
B — AcceptableMeets the requirements with minor issues. Remains approved.
C — Needs improvementAn action plan is requested from the supplier.
D — Not acceptableRemoved from the list of approved suppliers.tira del listado de proveedores aprobados.

Additional information

Suppliers or parties interested in establishing a commercial relationship with WhiteStone Technology may request additional information about the evaluation methodology via the organisation’s email address: calidad@whitestonetechnology.com.

Regulatory framework: UNE-EN ISO 9001:2015 — Quality Management Systems, clause 8.4 (Control of externally provided processes, products and services).