Professional maintenance，reform，Renovate various imported optical coating equipment brands

                                Intec，Hantran，Han Yi，Pu Rutai，modern，Korean vacuum，

                                Korean Vacuum，Korean Dragon，United Vacuum and other Korean coating equipment、

                                New Cologne, Japan，Showa，Guangchi equipment、

                               Various brandsPolycold、IC/5，XTCseries，IC/6 Crystal controller,

                               Korean brands of electronic guns and Hall ion sources/JapanJEOLelectron gun,