The registration address of the city of qingzhou is located on the south-west side of the roadway between qingjuu and qingyu road, located on the street of zhongzhou city, huangzhou, shandong province. The registration authority is the market supervision authority of qingzhou city. The legal person is represented by wang yongjiang and operates in the areas of sand-drilling equipment, sand-sucking equipment, mud-drilling equipment, mining equipment, production, sale of silting equipment, processing of mechanical accessories, sale (except where the operation is prohibited or restricted by law or by law, and licensing) (projects subject to approval by law and subject to authorization by the relevant authorities)。