... includes ZJ15/900DB, ZJ30/1700DB, ZJ40/2250DB, ZJ70/45000DB. Compound drive drilling rig includes ZJ30/1700LDB, ZJ40/2250LDB, ZJ50/3150LDB, ZJ70 ... , crown block, rotary table, drawworks, travelling block, mud pump, hook, top drive etc. 3. Why choose Tefico? Geography Advantage: Tefico is located ...