2018-10-17In 2017, the Great Wall cup nondestructive testing skills competition was succes...

DETAIL:On the morning of June 21, in order to strengthen the student beginning ability of ship engineering ...

2018-10-17Yantai Great Wall inspection invited to participate in the 15th expo

DETAIL:On October 10, 2018, the 15th China international sme expo opened in guangzhou. The expo is co-spons...

2016-12-22Congratulations to the leaders of yantai Great Wall testing and South Korea HTC ...

DETAIL:On December 22, 2016, yantai Great Wall inspection and HTC Corporation of South Korea, in order to d...

2016-12-22Yantai Great Wall inspection obtained the special equipment inspection and testi...

DETAIL:On April 21, 2016, yantai Great Wall inspection co., ltd. obtained the approved by the general admi...

2016-03-30China special equipment inspection association field appraisal - yantai Great Wa...

DETAIL:March 26-28, 2016, yantai Great Wall detection for the scene of the China association of special equ...

2016-01-18Yantai Great Wall inspection 2015 year-end cocktail party

DETAIL:Time flies and years fly by. In the blink of an eye, the busy year of 2015 has passed, and the year ...

2015-10-20Yantai Great Wall inspection CNAS regular supervision review and extension revie...

DETAIL:At the end of August 2015, the yantai Great Wall inspection successfully completed the CNAS regular ...

2015-10-20Professor he dahuan from changwon university in South Korea gave the lecture

DETAIL:On December 5th, 2014, professor he dahuan from changwon university of South Korea, who has signed t...

2014-10-11Leaders of shandong mechanical design and research institute visit and guide

DETAIL:On October 11, 2014, Lin jianghai, President of shandong mechanical design and research institute an...

2014-07-22CNAS laboratory accreditation certificate

DETAIL:49/5000 On July 22, 2014, Great Wall test successfully obtained the laboratory accreditation certif...

2014-06-16CNAS on-site assessment

DETAIL:June 14, 2014 solstice 15, Great Wall inspection ushered in the CNAS on-site review. At the last mee...

2014-01-23Radiation safety permit

DETAIL:On January 23, 2014, shandong provincial environmental protection bureau issued a radiation safety l...

2014-01-07Norwegian classification society (DNV) NDT qualification approval

DETAIL:On January 17, 2014, Great Wall testing was approved as a non-destructive testing qualification by D...

2013-11-04Quality management system certification (ISO 9000)

DETAIL:On November 4, 2013, Great Wall inspection obtained the quality management system certification (ISO...

2019-08-16Common chemical composition analysis methods

DETAIL:Chemical composition analysis refers to classical gravimetric analysis and volume analysis. Gravimet...

2019-06-20Metallographic analysis testing project and testing process

DETAIL:Metallographic analysis test items: 1. Welding metallographic examination;2. Cast iron metallographi...

2018-07-18Principles and basic concepts of failure analysis

DETAIL:Failure mechanisms are physical or chemical processes that cause parts, components, and materials to...

2018-02-16Introduction to chemical composition instrumental analysis

DETAIL:1. Electrochemical analysis refers to the application of electrochemical principles and techniques. ...

2017-08-28Introduction to the general principle of nondestructive testing

DETAIL:Non-destructive testing technology does not destroy parts or materials, can be directly tested on si...