Distribution of certificates of participation and thanks and appreciation to the students of the Department of Refrigeration and Air Conditioning Engineering in the College of Engineering Technology at Al-Esraa University after they completed the fourth scientific course, which was held at the Architecture Company for Commercial Agencies, Gibson Maintenance Center, under the supervision of Professor Engineer Laith Idris, Al-Mawla, assigned by the department’s presidency. The course continued for a month. The work was completed. In which students are involved in maintaining refrigeration and air conditioning equipment and teaching them how to maintain them