What you want to ask is where can Pinggu learn the operation certificate of air conditioning equipment? Beijing Pinggu District Open Source Vocational Skills Training School. According to Baidu map, Beijing Pinggu District Open Source Vocational Skills Training School can learn the operation of air conditioning equipment and have an operation certificate. Its address is located at No.22, Leyuan Road, Wangxinzhuang Town, Pinggu District, Beijing, and its business scope covers primary refrigeration and air conditioning system installation and maintenance workers, intermediate intelligent building administrators and computer communication network operation administrators.