Podobne ako ojazdené autá Melon Seeds aj naša spoločnosť predáva ojazdené autá energie transformers to the outside world. Generally, we recycle old customers’ power transformers and sell them to new customers. In this case, selling second-hand power transformer will achieve low cost. High return, can provide waste recycling to old customers, of course, will provide some resources for old customers. New customers can buy second-hand transformers at low prices. Therefore, the company is right to sell second-hand power transformers.