On the morning of June 8, 2021, the annual petroleum equipment exhibition CIPPE kicked off at the New China Exhibition in Beijing.  CSA Group, as the world's leading certification agency for explosion-proof products, brought explosion-proof certification experts to the exhibition.  On the morning of the first day of the exhibition, CSA Group issued ATEX explosion-proof certificate for torque limiter of Beijing Lixin Dehua Technology Co., LTD. Leaders and project leaders from both sides participated in the ceremony.  We have witnessed this important moment together.