亚洲系列精品一区二区-亚洲欧美日韩国产综合精品二区-日韩av一区二区中文字幕-国产精品偷福利在线观看

Dalian Guangcheng Optoelectric Technology Co., Ltd. was founded by Dr. Yongjun Lu,in Dalian, China in 2008.It is a national high-tech enterprise specialized in the development of special inspection equipment. Through continuous development,so far,it has more than 50 kinds of products,more than 30 patents in the domain of special equipment inspection,and a large number and a wide range of customers in the market.Now it is a leader in the field of special equipment inspection.