Always careful to satisfying the customer and to optimising internal resources, in July 1997 C.D.Z. obtained from D.N.V. ITALIA, a SINCERT accredited certifying body, certification of the company's Quality System as conforming to the requirements of UNI EN ISO 9002 standards. Quality and customer assistance In compliance with the standards, all C.D.Z. materials and services are checked both on the way in and on the way out. Similarly, all internal processes are continually checked. This, combined with the qualification of all component suppliers, makes it possible for C.D.Z. to obtain a quality product that satisfies all Customers' requirements, even those not initially specified. Once the AHU has been delivered, C.D.Z. provides customer assistance that gives immediate solutions to any problems that arise during and/or installation. This customer service also carries out functional checks of the ATP, verifying air capacity, load losses, noise and/or temperature levels, all with pressure drops. With the introduction of the Vision 2000 standards, all C.D.Z. services have been improved. The company has focused attention on the primary role played by the customer, with more attentive and qualified management of orders.