Guangdong diaphragm, coupling diaphragm, high-speed diaphragm coupling, JMIJ type connecting intermediate shaft type diaphragm coupling, JZMJ type diaphragm coupling for heavy machinery, JZM type diaphragm coupling for heavy machinery , DJM Expansion Sleeve Diaphragm Coupling, JMⅡJ Type Intermediate Shaft Type Diaphragm Coupling, JMI Type Basic Diaphragm Coupling with Counterbore, JMⅡ No Counterbore Basic Diaphragm Coupling-Hangzhou Hengli Transmission Co., Ltd.