JKLONG.Established in 1998 and headquartered in Ningbo, Zhejiang, JKLONG is a high-tech enterprise integrating R&D, manufacturing, sales, and service. The company specializes in producing water supply and drainage valves, gas valves, HVAC valves, plumbing fixtures, and water meter fittings. Its products are widely applied in municipal water supply and drainage, gas distribution, urban heating, and HVAC systems. With a nationwide network of nearly 500 sales outlets, JKLONG has established a leading market position in the civil valve sector. The company holds certifications for the three major management systems—ISO9001, ISO14001, and ISO45001—ensuring exceptional product and service quality. It is committed to providing reliable, comprehensive valve and fluid control solutions for diverse systems.