1.Are you a trading company or manufacturer ? We are a professional factory with 10 years experience in the field of High and low Voltage switch gears, Substation,transformers,cable distribution box and various electrical equipment, such as vacuum circuit breaker , load break switch etc.Our factory is the excellent supplier of State Grid Corporation in China . 2. Do you accept customized service ? We offer OEM/ODM service , can print your logo on product . our professional technical and quotation team can provide a satisfied project according to your drawing and parameters . 3. What is your MOQ? Our MOQ is 1 piece. 4. How long is your delivery lead time ? It depends on your product requirement and quantity . Generally , 5~10 working days is available . 5. How do you solve quality problems? Please provide detailed photos of quality problems. our technical and quality testing department will analyse.we will make a satisfied solution within 2 days . 6. What is your payment terms ? 30%T/T in advance,70% before shipment . West union , L/C are also acceptable .