Bend the lens cleaning paper into several folds and soak it with a few drops of analytical pure acetone;

Qingdao Dadong Automation Technology Co., Ltd. is a National High-tech Enterprise that specialized in R&D and manufacturing of all kinds of CNC machine tools for sheet metal industry, includes punching, bending, laser cutting and shearing（China shearing machine)

DARDONTECH aims to provide the optimal solution for global customers and is always focusing on improving efficiency and decreasing the processing cost of customer.(China shearing machine)

Because of excellent products quality and passion of our people, DARDONTECH is keeping creat miracles in sheet metal machinery industry.（China shearing machine)

With years of development, DARDONTECH Brand becomes the pronoun of high-quality and high-efficiency.(China shearing machine)

Because of excellent products quality and passion of our people, DARDONTECH is keeping creat miracles in sheet metal machinery industry.（China shearing machine)