Henan Mansion Heavy Industry Co., Ltd. is a professional manufacturer of hoisting and operating mechanisms which is special serving for the crane industry. The leading products include special reducer for traveling crane, electric hoist reducer, hoisting mechanism and operating driving mechanism, special reducer for three-dimensional parking garage, modular lifting mechanism and operating mechanism. As for industrial reducer, including H / B series heavy industrial gearbox, ZDY, ZLY, ZSY and ZFY series hard tooth surface cylindrical gear reducer; DBY / DCY / DFY / DC YK series bevel gear reducer with hard tooth surface; QY, ZQ, ZSC series special reducer for cranes; R series helical gear reducer, F series parallel shaft helical gear reducer, K series spiral bevel gear reducer, S series helical gear worm gear reducer and soon. It is a manufacturer which can design the non-standard customized special reducer. The company has focused on the R & D and manufacturing of products with more than 20 years in the lifting industry, laying a solid foundation for the company in the crane accessories industry. For more than 20 years, the supporting products and market share have exceeded 70%. These honors come from the trust of customers and the efforts of our employees. The company was awarded the famous brand product of Henan Province, and Dongtai trademark is a famous trademark of Henan Province. The industry was the first to obtain ISO9001 international quality system and ISO14000 international environmental protection system certification. Company equipment: the company has imported Mitsubishi gear hobbing machine, Leshall gear grinding machine, Mori precision machine compound processing machine, Doosan, little giant and other CNC lathes, CNC grinders, microcomputer controlled atmosphere multi-purpose furnace, imported Klinger gear detector, three coordinate detector, optical spectrum analyzer and a variety of on-line and off-line detection instruments and other international advanced equipment. The gear production adopts advanced dry cutting technology which is green and friendly for environment. Automatic loading and unloading production lines are used in product manufacturing to reduce the impact of human factors on product quality. The strict technical standards, rigorous assembly processes and strict testing methods have been formulated for each link of assembly to ensure stable and reliable product quality.