QSLK.QSLK (QUANSHUN) is a high-tech enterprise focusing on the whole industrial chain of intelligent industrial valves, with A1 class special equipment manufacturing license and ISO, API and other international certifications. The products cover petrochemical, electric power, metallurgy and other fields, serving PetroChina, CNNC and other head enterprises. The core products include butterfly valves, quick-cut blind valves and temperature and pressure reducing devices. The technical team accounts for more than 80% of the company, equipped with CAD design center and R&D laboratory, and the annual production capacity The annual production capacity reaches 30,000 sets.