Our company has set up a strict quality guarantee system according to the international standard,all of our products have two years’ guarantee. Our company has a team of professional and experienced engineers From the capacity and professionalism ,our staff is the number one among the competitors.our management concept is “Strive for survival, development and efficiency on the basis of quality.”we form alliances with customers and cooperative partners,Our company fully uses our own brand-“Changyu”, capital , technology,market advantages, and further enhancing product quality and service,we will offer  more comprehensive technology, products and information services for the customers.in order to realise the target for serving society by technology.
With the widely use of LED,our company has  poured huge human and material resources to participate in the customer’s develop and design, We think and worry about what the customer think and worry about