Thanks for inviting me. Duokang is the world's leading commercial cleaning and hygiene brand. It was born in 1968 in Sweden, a Nordic country of innovation. It belongs to essity, a global leader in the field of sanitary products. At present, it is fully operated by Vida Group, an Asian household paper giant. It is a professional cleaning and hygiene brand under Vida Group, which specializes in providing overall hygiene solutions. The reason why the toilet paper pumping system of Dokang Digital Communication Center is so popular is that it adopts global innovative patented technology, which effectively avoids the waste of traditional public toilet paper taking one at a time and can reduce the waste of paper towels for customers by 40%. But also led the global public health paper revolution, and also brought management, cost reduction and efficiency improvement as well as high-quality, hygienic and reassuring toilet experience to public toilets.