Recently, my company sales engineers went to Zhengzhou, the old customers: Henan Ecological Monitoring Center for equipment maintenance visit. Ecological Monitoring Center of Henan Province since 2014, the company purchased two intelligent integration after distillation apparatus, have added four of the same product, the old model, the new models are very complete. We are grateful to the user recognition of our company's products, but also a great responsibility. Pay close attention to product quality and adhere to the end-user visits, good after-sales service are equally important.