The company 's main products are : QTZ20 (3006), QTZ25 (3008,3207), QTZ31.5 (3808,4207), QTZ40 (4209,4708,5008), QTZ63 (5013,5510), QTZ80 (5613,5613 PA, 5613PB , 5609 ) , QTZ125 ( of 6015,5513,5023 PA , 6015PB , 5513PC ) , QTZ160 ( 6021PA 5023PB ) QTZ250 ( 7030PA 7030PB ) QTZ315 ( 7040PA 7040PB ) tower crane ; SC100/100 SC200/200 construction elevator ; JS series concrete mixer , PL series concrete batching machine , YHZS , HZS series concrete mixing station ; HLS series of concrete mixing ; JZB HBTS series delivery pump , JZL pile driver and hoist, gates and other water conservancy machinery ; HSW series rotary support , the XL series rotation speed reducer , WCJ120 series , BX series of variable speed reducer , HSGK series hydraulic station , YG series of high-strength bolts , QT series of winches , multifunction limiter , ZL series tire loaders and other products .