Ningbo JMCooling Co., Ltd. was established in 1985. Through more than 30 years’ development, now we have expanded our products coverage from cooling copper fittings to the whole life area, including construction area, cooling system, heat pump system, heating-floor system and auto-mobile. etc. With advanced production equipment and a strict quality control system, together with our professional technical and management team, we can provide customers with high-quality customized products and timely services. Here at JM, we're in our element pushing the possibilities of efficiency, performance and reliability to create China's best HVAC accessories. Our quick connectors  and pre-charged line sets are widely used for heat pump applications, greatly simplify the installation and maintenance time and cost.