Our company participated in the 20th Iran Tehran Oil Exhibition in May 2015. The main products exhibited included the lifting clamp torque system, the riser pressure system, the D-type meter, the F-type meter, etc. We visited the application of the cable weight indicator at the exhibition. We then transferred from Tehran to the Iranian oil city of Ahvaz, visited major customers, and conducted business negotiations at the NIDC headquarters center. We achieved good results.