1.Are you a trading company or manufacturer ? We are a manufacturer, mainly producing products such as oil-immersed transformers, dry-type transformers, and substations. 2.Do you accept customized serveice ? We offer OEM/ODM service , can print your logo on product . our professional technical and quotation teamcan provice a satisfied project according to your drawing and parameters . 3.How long is your delivery lead time ? It depends on your product requirement and quantity . Generally about 20-25 days 4. Do you provide warranties for your products? Yes, we offer our customers a two-year quality guarantee.