Certificate No.12311Q00151R3M

This is to certify that:

TINTAINN STEEL PIPE CO.,LTD

Organization Code:9112011069067785XF

Registered Address:NO.300 XIANFENG EAST ROAD,DONGLI DISTRICT,TIANJIN CITY,CHINAProduction and Office Address:NO.300 XIANFENG EAST ROAD,DONGLI DISTRICT,TIANJIN CITY,CHINA

Has been assessed and certified as meeting the requirements of:

GB/T19001-2016/ISO9001:2015 Standard

For the following activities:

Production and Corrosion Protection of ERW Steel Pipe and LSAW Steel Pipe