Woken floor drains are from Germany. Vulcan electric pulse anti-scaling system. Vulcan is an ecological and environmentally friendly water treatment system. It has a 10-year international warranty and many internationally renowned certifications. Its products are sold in more than 70 countries around the world. The company advocates the concept of scientific water production and efficient water supply. Scientific water production includes water quality purification of groundwater and surface water, rainwater collection, sewage and wastewater treatment, and seawater desalination. Efficient water use includes efficient agricultural irrigation, integrated water and fertilizer irrigation, reclaimed water reuse, and rainwater utilization.