22
2020-10
“ZGL GROUP” owns a technological R&D center with a great number of high quality talents of strong will, precise skill and professional expertise, among which there are 40 senior and intermediate level technicians with master or bachelor’s degree, the group is able to carry out independent R&D in developing major technical equipment with the support of strong technological force, rich practical experience and advance design abilities.we have passed the API ISO international quality system certification.
2020-10-22
22
2020-10
total investment reached RMB 800 million ,with an annual output of 500,000 tons of seamless steel pipes
2020-10-22
29
2019-07
29
2017-07
29
2017-07
business license