Permanent state of hong kong environmental science and technology ltd. Is registered in 15-1 houses of 613 new world flowers in tianning district, changzhou city, jiangsu province, and is registered as the city of changzhou's executive office of the tianning district administration, represented by a legal person, yang yunchun, and operates on a range of licensed projects: operation of hazardous chemicals (subject to the approval of the law, subject to the approval of the relevant authorities) and general projects: research and development of technology for the recycling of resources; sale of chemical products (other than licensed chemical products) (in addition to the legally authorized projects, operating autonomously on the basis of a licence)