Date：2022-04-27 14:19:34

Some of the company's products must be stamped with CNAs and CMA seals when making quality inspection reports, which requires many relevant industry laboratories to pass CNAs (laboratory accreditation) and CMA (qualification accreditation). What is the difference between CMA and CNAs? Which is better, CMA or CNAs certification? This paper has collected and sorted out some materials, which are expected to be of great reference value to all readers. View >>

Date：2022-04-27 14:09:56

CNAs is reviewed and managed by China conformity assessment and Accreditation Commission and is internationally recognized. CMA is reviewed and managed by CNCA (China National Certification and accreditation supervision and Administration Commission) and the quality and technical supervision departments of the people's governments of all provinces, cities, autonomous regions and municipalities directly under the central government. It is effective within the territory of China and plays a fair role in issuing certificates to the society. The handling methods of nonconformities in preliminary evaluation, Supervision Review and re evaluation are different, and the handling methods of general nonconformities and serious nonconformities are also different. In order to help you have an in-depth understanding, the following contents are sorted out by Chuangxin testing network for your reference. View >>

Date：2022-04-27 14:05:26

Data reliability was originally called data integrity in Chinese, but now it is called data reliability. Data integrity refers to the degree to which all data are complete, consistent and accurate in the life cycle of data. Ensuring data integrity means collecting, recording, reporting and preserving data and information in an accurate, true and completely representative manner. Data reliability has been the focus of global drug regulators in recent years. It is also the motivation and key content of CFDA's national clinical trial verification since July 2015. View >>

Date：2022-04-27 14:02:17

The criteria for accreditation and review of laboratory qualification stipulates: "the laboratory shall appoint a quality director (or quality director), whose main responsibility is to be responsible for the establishment and effective operation of the" documented "quality management system. It should be given the responsibility and power to ensure the effective operation of the quality management system at any time, so as to make decisions and solve the problems existing in the quality management system ". The person in charge of laboratory quality is authorized by the top management of the company to fully perform the healthy operation of the company's quality management system. View >>

Date：2022-04-26 15:06:10

As an industrial power, China has also experienced qualitative development in the industrial field. Industrial CT can be used in the field of industrial flaw detection and nondestructive testing. It can quickly and non destructively detect the internal structure, composition and defects of objects by using rays, and can clearly and accurately present two-dimensional sectional images and three-dimensional images. The images have the advantages of high resolution and high precision, can be detected in real time, and can detect large industrial components. View >>

Date：2022-04-26 14:50:53

Failure analysis can find out the failure position, failure cause and mechanism of IC chip, so as to provide product improvement direction and suggestions to prevent problems. It can find out the failure cause and preventive measures for designers, producers and users. Failure analysis provides basis for improving product design and material selection, and prevents or reduces fracture accidents; Reliability can also be predicted by failure analysis; It can improve the reputation of mechanical products and play the role of technical feedback. View >>

Date：2022-04-26 14:47:29

Nondestructive testing is to detect the internal defects and surface defects of the workpiece without damaging the workpiece by using the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the abnormal internal structure of the material or the existence of defects. Welding: usually refers to the welding of metal. It is a forming method in which two separate objects are combined into a main body by heating or pressurizing, or both at the same time. Classification: according to the heating degree and process characteristics of the welding process, the welding methods can be divided into three categories. View >>

Date：2022-04-26 14:44:56

According to the failure mode and phenomenon, the general testing laboratory will simulate and reproduce the failure phenomenon through analysis and verification, find out the cause of failure and dig out the failure mechanism. It has strong practical significance in improving product quality, technology development and improvement, product repair and arbitration of failure accidents. The methods are divided into destructive analysis, nondestructive analysis, physical analysis, chemical analysis and so on. View >>

Date：2022-04-25 14:26:59

Just entering the second quarter, it was revealed that the price of mature process wafer foundry stopped rising due to the rising inventory and weakening demand of large-size panel driver IC (DDI), driver and touch integration chip (tddi) and non Apple mobile phone power management chip (PMIC) in the electronic supply chain View >>

Date：2022-04-25 14:25:00

Connectors are also called connectors. Also known as connector and socket in China, it generally refers to electrical connector. That is, a device connecting two active devices to transmit current or signal. The male terminal and the female terminal can transmit information or current through contact, which is also called a connector. Connector reliability is its most important performance. When using connectors, we can record some common factors affecting connector reliability, carefully study and analyze the causes of failure, and put forward some ideas on how to improve connector reliability after finding the causes. Here we have sorted out five common causes of connector failure. Let's have a look. View >>