The improvement requires our customers’ opinion. In order to improve the quality of our services and get feedback on it, we have decided to start a customer satisfaction survey which is the dedicated effort that will give us an overall idea about your assessments, remarks and expectations. Thank you for helping us by taking a few minutes to fill the customer satisfaction questionnaire and send it by fax: 021 34 20 19 or by email at cndlab@crti.dz.