HONGHUA GROUP LIMITED,'front cover',1,'CONTENTS',3,'GROUP INTRODUCTION',4,'SUBSIDIARIES',6,'SALES ACHIEVEMENTS',8,'MANUFACTURE CAPACITY',14,'RESEARCH CAPACITY',16,'QUALIFIATION CERTIFICATION',18,'SERVICES AND TRAINING',20,'HONGHUA RIG PRODUCTS',23,'AC VFD (DBS) RIG SERIES',24,'DC (SCR) RIG SERIES',25,'RT independently Drive (LDB) Rig Serise',27,'Mechanical Rig Series',30,'Trailer(Truck-Mounted)Rig Series',32,'Arctic Rig',35,'Desert Fast Moving Rig',36,'Mast and Substructure',42,'Mud Pump',46,'Electric Drive System',54,'SOLUTION',62,'HONGHUA PRODUCTS',72,'DIRECT-DRIVE TOP DRIVE',83