Demag Cranes & Components [India] Private Limited manufactures DC-Com Chain Hoists. Demag Cranes & Components [India] Private Limited is an ISO 9001 certified company. The DC-Com Chain Hoists is used for smooth transport of the loads on I beam girders. The salient features of DC-Com Chain Hoists are simple commissioning; ergonomic handling; service friendly; 24V contactor control; and two hoist speeds.