pre-sale service1.Provide professional advice: at any time to provide customers with information on products, prices, technology, industry solutions and other aspects of information consultation, counseling ways include the network, telephone, correspondence, home and other ways;2. To provide sample services: free samples for customers to build and mail;3. To provide inspection reception: customers can make an appointment to visit the exhibition hall, visit the company site visits, the company provides professional reception staff.Sale of services1. Integrity and fairness: Regardless of the size of the contract, ···