The registered address of ishikawa water treatment equipment ltd., shandong province is in haidu, qingzhou city economic development area zhang chun ling is represented by the market supervision authority of the city of qingzhou at no. 2263 north road, which covers the production, sale and installation of water treatment equipment, water supply equipment, filling equipment, bactericide equipment; the sale of spare parts and consumables for water treatment equipment; the processing and sale of mechanical accessories; and the import and export of goods. (projects subject to legal approval are not allowed to operate without the approval of the relevant authorities)。