ProductList
- cycloidal-planetary-gear-speed-reducer
- gear-reducer
- ZQ, ZQH, ZQSH gear reducer
- The PM type cylindrical gear reducer
- The ZQA type cylindrical gear reducer
- The PJ type cylindrical gear reducer
- ZQ, ZQD high speed cylindrical gear reducer
- ZD, ZDH, ZDSH type reducer
- ZL, ZLH, ZLSH type reducer
- ZS, ZSH, ZSSH type reducer
- JZQ series gear reducer
- Gear ZLY, ZLZ hardened surface of cylindrical gear reducer JB/T8853-2001
- ZSC, ZSC (A).reduction box
- Gear ZDY, ZDZ hardened surface of cylindrical gear reducer JB/T8853-2001
- YK series conical and cylindrical gear reducer YB/T050-93
- Gear ZSY, ZSZ hardened surface of cylindrical gear reducer JB/T8853-2001
- K series conical and cylindrical gear reducer
- FDBY cone cylindrical gear reducer ZBJ19026-90
- FZLY cylindrical gear reducer ZBJ19004-88
- YN series gear reducer YB/T050-93
- HNK type circular arc gear reducer YB/T050-93
- QJY series of hoisting machinery reducer
- QJL crane vertical reducer JB/T8905.3-1999
- QJT crane set type reducer JB/T8905.4-1999
- QJD crane base type reducer JB/T8905.2-1999
- QJ type crane reducer JB/T89051-1999
- ZZL cone cylindrical gear reducer
- S series gear reducer
- DBY, DCY, DBZ, DCZ cylindrical gear reducer JB/T9002-1999
- ZDS type gear reducer JB/T5560-1991
- GS type high speed involute cylindrical gear box
- MHS, HS series of gear box
- JDX edge drive reducer JC/T878.2-2001
- The TJ315 type cylindrical gear reducer
- ZJY type shaft mounted cylindrical gear reducer JB/T 7007-1993
- ZWS series of spiral bevel gear reducer
- C a helical gear reducer
- PYZ series hardened shaft mounted speed reducer
- CR helical gear reducer
- CE two stage helical gear reducer
- ZLD, ZLDA spiral bevel gear reducer
- ZLS, ZLSA spiral bevel gear reducer
- ZLZ series of spiral bevel gear reducer
- JS series gear reducer
- NGLED gear reducer
- HD bevel gear commutator
- BZ series of spiral bevel gear steering box
- NT series of spiral bevel gear reducer
- XT series of spiral bevel gear reducer
- TH, TB high power reducer
- CHD type gear reducer motor
- Type CHM: horizontal straight gear reducer
- CH horizontal type single-phase, three-phase motor gear reducer
- Type CVD: gear reducer motor
- CVM type: straight vertical junction type gear reducer
- CV type vertical single-phase, three-phase motor gear reducer
- RC series helical (spiral bevel) steering gear box
- T series of spiral bevel gear steering box
- Z series spiral bevel gear reducer
- H helical gear box B spiral bevel gear helical gear box
- GH type roller movable teeth reducer JB/T6137-1992
- TZ series coaxial gear reducer JB/T7000-1993
- LC, LC (A) type two hardened cylinder gear vertical reducer
- LCW type horizontal level two hardened cylinder gear reducer
- DC, LDC, DCW cylindrical gear reducer
- DJC type vertical single-stage hardened cylinder gear reducer
- DSC, DZC vertical cylindrical gear reducer
- LPJ, LPB, LPP type vertical parallel shaft reducer of hard toothed surface
- FJ hardened cylinder gear reducer
- TY series coaxial gear reducer ZBJ19009-88
- Reducer ZBJI19027 with type QS
- NHD110 gear reducer
- DT series of spiral bevel gear reducer
- MC series hardened - gear speed reducer
- LTJ series transmission gear reducer
- VCYK type cone cylindrical gear reducer
- SD gear side mixer
- LC coaxial gear reducer
- TC cross spiral bevel gear reversing reducer
- QSJ series of cylindrical gear reducer
- PC series gear reducer
- SPJ-800 type reducer
- TYL series hardened cylinder gear reducer
- XT series gear reducer
- DBS series of unilateral double driving mill reducer
- ZJ axial cylindrical gear reducer JB/T 7337-1994
- ZL2 (Ⅱ 1 Chaplygin 2) cylindrical gear two stage reducer
- SP series conical gear commutator
- B180G type vertical cylinder gear reducer
- AT series spiral bevel gear reducer
- TE, TEK cylindrical gear reducer
- TF, TFK conical, cylindrical gear reducer
- QS, QSE, LG type "three in one" (jb-t9003-2004).
- QSC type "three in one" (jb-t9003-2004).
- PV series universal gear box
- ZD80, ZD90, ZD100 series helical gear reducer
- ZD (H) MCD80, 90, 100 series of cylindrical gear reducer
- The TMG suspension gear reducer
- SXH/B high power gear box
- DB spiral bevel gear DH parallel shaft helical gear reducer
- PJT series flat double gear box
- XHXB helical bevel gear series high power reducer
- MCD series gear reducer
- TEX type gear reducer
- TK series gear reducer
- TM series gear reducer
- JH/B series of industrial gear box
- ZFY, ZXY type of hardened cylinder gear reducer
- TD9000 series of hardened gear reducer
- TW, TWC series of shaft mounted speed reducer
- TA, TC9000 type of hardened gear reducer
- SL series high power gear box
- The PR module type gear reducer
- DSZC (D) universal speed reducer
- SKH type circular arc gear speed reducer
- ZSC (D) type high speed reducer
- LPYB-J, LSYB-J type vertical parallel axis gear reducer
- LFY type two stage vertical flange reducer of hard toothed surface
- GOJ type of hardened gear reducer
- JPT type of involute cylindrical gear reducer (JB-T10244-2001)
- KPTH type of involute cylindrical gear reducer JB/T10243 - 2001
- The B315 type cylindrical gear reducer
- AJ48 gear reducer
- GY type high speed arc cylindrical gear speed reducer increase (decrease)
- CF series conical cylindrical gear reducer
- TZ type three level vertical gear reducer
- TCJ series of cylindrical gear reducer
- QY hardened gear reducer for crane
- planet-gear-speed-reducer
- Gear-motor
- Worm-gear-reducer
- Harmonic reducer
- elevator
- Stepless reducer
- Special-reducer
- clutch
- support
- Three-reduction-box
- Belt-reduction-box
- Enterprise standard reducer (device)
- coupler-coupling
- Precision reducer
- Combined speed reducer
- Taiwan-foreign-reducer
- arrester
- motorized pulleys ;
- Electric
- Backstop
- asynchronous-motor
- synchronous-motor
- bearing enelosure; bearing oil seal ;
- Reducer fittings
- Lubricating oil, lubricating grease
Current positionReducerHome>> gear-reducer >> T series of spiral bevel gear steering boxSuppliers
Logo
Introduction
Shanghai Huifeng Transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海慧丰传动机械有限公司
Recommended for:




Shanghai Huifeng Transmission Machinery Co., Ltd. is a collection development, production and sales reducer, reducer in one of professional enterprises. The main production H, B, P, V high power gear reducer, ZDY, ZLY, ZSY, ZFY, DBY, DCY, DFY, TY, CJY, YCJ, ZJY, YCT, YTC series o
Chinese Name:上海慧丰传动机械有限公司
Recommended for:





Shanghai Huifeng Transmission Machinery Co., Ltd. is a collection development, production and sales reducer, reducer in one of professional enterprises. The main production H, B, P, V high power gear reducer, ZDY, ZLY, ZSY, ZFY, DBY, DCY, DFY, TY, CJY, YCJ, ZJY, YCT, YTC series o
Zhejiang Yongjia speed regulating machine Factory. 产品样本
Chinese Name:浙江省永嘉调速机厂.
Recommended for:




F series three grade helical gear reducer K series helical gear - spiral umbrella teeth.. S series helical gear - worm gear deceleration.. R series helical gear reduction.. T series helical wheel gear drive box D series reducer Z series reducer MB series planetary rubbing machine
Chinese Name:浙江省永嘉调速机厂.
Recommended for:





F series three grade helical gear reducer K series helical gear - spiral umbrella teeth.. S series helical gear - worm gear deceleration.. R series helical gear reduction.. T series helical wheel gear drive box D series reducer Z series reducer MB series planetary rubbing machine
Zhejiang Dongfang Transmission Machinery Co., Ltd. 产品样本
Chinese Name:浙江东方传动机械有限公司
Recommended for:




Zhejiang Eastern transmission machinery company is engaged in the speed reduction of professional manufacturing units, specializing in the production of R, F, K, S, H/B, X.B, MB, WB, DP series reducer manufacturers, is the enterprise of large civilization development, a set of sp
Chinese Name:浙江东方传动机械有限公司
Recommended for:





Zhejiang Eastern transmission machinery company is engaged in the speed reduction of professional manufacturing units, specializing in the production of R, F, K, S, H/B, X.B, MB, WB, DP series reducer manufacturers, is the enterprise of large civilization development, a set of sp
Tianjin Aobo decelerating Machinery Co., Ltd. 产品样本
Chinese Name:天津诺曼减速机制造有限公司
Recommended for:




Tianjin Norman reducer Manufacturing Co., Ltd. is a professional engaged in research of high-tech gear and transmission equipment, professional company, which produces cycloid reducer, hard surface reducer, gear reducer, hardened cylinder gear reducer involute cylindrical gear re
Chinese Name:天津诺曼减速机制造有限公司
Recommended for:





Tianjin Norman reducer Manufacturing Co., Ltd. is a professional engaged in research of high-tech gear and transmission equipment, professional company, which produces cycloid reducer, hard surface reducer, gear reducer, hardened cylinder gear reducer involute cylindrical gear re
Shanghai letter transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海枫信传动机械有限公司
Recommended for:




Shanghai letter transmission Machinery Co., the company has two production bases in Shanghai and Shandong, covering a total area of 300000 m2, a phase of the project has a modern standard factory building 60000 m2. The company leading product in a modular precision reducer, paral
Chinese Name:上海枫信传动机械有限公司
Recommended for:





Shanghai letter transmission Machinery Co., the company has two production bases in Shanghai and Shandong, covering a total area of 300000 m2, a phase of the project has a modern standard factory building 60000 m2. The company leading product in a modular precision reducer, paral
Tianjin JinWei reducer Co., Ltd. 产品样本
Chinese Name:天津津伟减速机有限公司
Recommended for:




Tianjin Wei Reducer Co., Ltd. is a focus on the gear reducer and related equipment development, manufacturing and sales of professional companies, producing a planetary gear reducer, cycloid reducer, worm gear, electric drum , and other gear screw lift models, with many years of
Chinese Name:天津津伟减速机有限公司
Recommended for:





Tianjin Wei Reducer Co., Ltd. is a focus on the gear reducer and related equipment development, manufacturing and sales of professional companies, producing a planetary gear reducer, cycloid reducer, worm gear, electric drum , and other gear screw lift models, with many years of
Qingdao Chaojie Deceleration machinery Co., LTD. 产品样本
Chinese Name:青岛朝杰减速机械有限公司.
Recommended for:




Qingdao Chaojie Deceleration machinery Co., LTD.
Chinese Name:青岛朝杰减速机械有限公司.
Recommended for:





Qingdao Chaojie Deceleration machinery Co., LTD.
Beijing Saini Transmission Machinery Co., Ltd. 产品样本
Chinese Name:北京赛尼传动机械设备有限公司
Recommended for:




Beijing Saini Transmission Machinery Co., Ltd. product trademark: "Sini", is a professional production of various kinds of reducer units, is currently the only production of four series of gear reducer, screw lift company. Enterprise was founded in 2001, through unremitting effor
Chinese Name:北京赛尼传动机械设备有限公司
Recommended for:





Beijing Saini Transmission Machinery Co., Ltd. product trademark: "Sini", is a professional production of various kinds of reducer units, is currently the only production of four series of gear reducer, screw lift company. Enterprise was founded in 2001, through unremitting effor
Dezhou Kufeng Machinery Equipment Co., Ltd. 产品样本
Chinese Name:德州库丰机械设备有限公司
Recommended for:




Dezhou Kufeng Machinery Equipment Co., Ltd. is located in Dezhou Development Zone, Shandong Province, covering an area of over 20,000 square meters and a construction area of 1,000 square meters. The company mainly produces spiral screw lifts, commutators and four series of reduc
Chinese Name:德州库丰机械设备有限公司
Recommended for:





Dezhou Kufeng Machinery Equipment Co., Ltd. is located in Dezhou Development Zone, Shandong Province, covering an area of over 20,000 square meters and a construction area of 1,000 square meters. The company mainly produces spiral screw lifts, commutators and four series of reduc
Zhejiang Dongfang Transmission Machinery Co., Ltd. - Zhengzhou Office 产品样本
Chinese Name:浙江东方传动机械有限公司郑州办事处
Recommended for:




Zhejiang Eastern Transmission Machinery Co., Ltd. is China general machinery industry association by gearbox units, is engaged in the reducer, gearbox, executive Professional Company such as design and manufacture, the company in the domestic same industry took the lead through t
Chinese Name:浙江东方传动机械有限公司郑州办事处
Recommended for:





Zhejiang Eastern Transmission Machinery Co., Ltd. is China general machinery industry association by gearbox units, is engaged in the reducer, gearbox, executive Professional Company such as design and manufacture, the company in the domestic same industry took the lead through t
Wuxi Keyide Transmission Technology Co., Ltd. 产品样本
Chinese Name:无锡科意德传动科技有限公司
Recommended for:




Wuxi Keyide Transmission Technology Co., Ltd., located in the economic prosperity of the Yangtze River Delta - Wuxi City Economic Development Zone of Huishan. East Asia Pacific Financial Center of Shanghai, west of the provincial capital Nanjing, North pillow Yangtze River, south
Chinese Name:无锡科意德传动科技有限公司
Recommended for:





Wuxi Keyide Transmission Technology Co., Ltd., located in the economic prosperity of the Yangtze River Delta - Wuxi City Economic Development Zone of Huishan. East Asia Pacific Financial Center of Shanghai, west of the provincial capital Nanjing, North pillow Yangtze River, south
Shanghai Kede Transmission Equipment Co., LTD. 产品样本
Chinese Name:上海克德传动设备有限公司.
Recommended for:




Series cycloid reducer WB micro cycloid reducer, RV Worm reducer XT series S series - worm reducer R series coaxial hard tooth surface cylindrical gear reducer MB, MBN stepless transmission machine F series WVF worm reducer micro cycloid reducer
Chinese Name:上海克德传动设备有限公司.
Recommended for:





Series cycloid reducer WB micro cycloid reducer, RV Worm reducer XT series S series - worm reducer R series coaxial hard tooth surface cylindrical gear reducer MB, MBN stepless transmission machine F series WVF worm reducer micro cycloid reducer
Wuxi Lianghao Transmission Machinery Co., LTD. 产品样本
Chinese Name:无锡市良浩传动机械有限公司.
Recommended for:




The enterprise information is being sorted out! The enterprise information is being sorted out!
Chinese Name:无锡市良浩传动机械有限公司.
Recommended for:





The enterprise information is being sorted out! The enterprise information is being sorted out!
Dezhou Yijia to heavy reductor Co., Ltd. 产品样本
Chinese Name:德州亿佳来重型减速机有限公司
Recommended for:




Shandong province Dezhou City Yijia to heavy (transmission) Machinery Co., Ltd., Shandong is the production of speed reducer of the earliest professional manufacturers, covers an area of 29800 square meters, construction area of 8000 square meters, 60000000 yuan in fixed assets,
Chinese Name:德州亿佳来重型减速机有限公司
Recommended for:





Shandong province Dezhou City Yijia to heavy (transmission) Machinery Co., Ltd., Shandong is the production of speed reducer of the earliest professional manufacturers, covers an area of 29800 square meters, construction area of 8000 square meters, 60000000 yuan in fixed assets,
Zhejiang DongFang Transmission Machinery Co., Ltd. Xi'an Branch 产品样本
Chinese Name:浙江东方传动机械有限公司西安分公司
Recommended for:




Zhejiang Eastern Transmission Machinery Co., Ltd. is Chinese general machinery industry association by gearbox units, is engaged in the speed reduction of professional manufacturing company. The company in the domestic same industry took the lead through the ISO9001 international
Chinese Name:浙江东方传动机械有限公司西安分公司
Recommended for:





Zhejiang Eastern Transmission Machinery Co., Ltd. is Chinese general machinery industry association by gearbox units, is engaged in the speed reduction of professional manufacturing company. The company in the domestic same industry took the lead through the ISO9001 international
Shanghai Huatong Enterprise Group Co. 产品样本
Chinese Name:上海华通企业集团公司.
Recommended for:




Shanghai Huatong Enterprise Group Co.
Chinese Name:上海华通企业集团公司.
Recommended for:





Shanghai Huatong Enterprise Group Co.
Zhejiang Tongli Reducer Co., Ltd 产品样本
Chinese Name:浙江通力减速机有限公司
Recommended for:




Zhejiang Tongli Reducer Co., Ltd Zhejiang Tongli Transmission Technology Co., Ltd. (formerly Zhejiang Tongli Heavy Gear Co., Ltd.) was founded in 2008 and is a national high-tech enterprise specializing in the research and development, production, sales, and service of reducers.
Chinese Name:浙江通力减速机有限公司
Recommended for:





Zhejiang Tongli Reducer Co., Ltd Zhejiang Tongli Transmission Technology Co., Ltd. (formerly Zhejiang Tongli Heavy Gear Co., Ltd.) was founded in 2008 and is a national high-tech enterprise specializing in the research and development, production, sales, and service of reducers.
Shanghai Nengwei reducer manufacturing Co., Ltd. 产品样本
Chinese Name:上海能蔚减速机制造有限公司
Recommended for:




Shanghai 能蔚 reducer Co., Ltd. is a scientific research, production, sales and integration of professional manufacturers, and in the same industry in the first through the ISO9001 international quality system certification. The company has Germany KLINGEINBERG high precision worm
Chinese Name:上海能蔚减速机制造有限公司
Recommended for:





Shanghai 能蔚 reducer Co., Ltd. is a scientific research, production, sales and integration of professional manufacturers, and in the same industry in the first through the ISO9001 international quality system certification. The company has Germany KLINGEINBERG high precision worm
Shanghai Yulong reducer Co., Ltd. 产品样本
Chinese Name:上海玉隆减速机有限公司
Recommended for:




Shanghai Yulong reducer Co. Ltd. is a domestic transmission equipment specializing in the production of gear reducer, gear machine company, took the lead through the ISO9001:2000 international quality system certification, the sales network covering the whole country. The compan
Chinese Name:上海玉隆减速机有限公司
Recommended for:





Shanghai Yulong reducer Co. Ltd. is a domestic transmission equipment specializing in the production of gear reducer, gear machine company, took the lead through the ISO9001:2000 international quality system certification, the sales network covering the whole country. The compan
Tianjin City Debei transmission machinery research sales center 产品样本
Chinese Name:天津市得贝传动机械研销中心
Recommended for:




The company is a leading manufacturer of sales: Sales of Tianjin K, S, F, R series reducer motor; X, B series cycloid machine; HZ, MB, UDL series of CVT; T series steering; WP, FC, RV worm reducer; SWL, JW lifts; P series planetary gear reducer; H, B series of industrial gear bo
Chinese Name:天津市得贝传动机械研销中心
Recommended for:





The company is a leading manufacturer of sales: Sales of Tianjin K, S, F, R series reducer motor; X, B series cycloid machine; HZ, MB, UDL series of CVT; T series steering; WP, FC, RV worm reducer; SWL, JW lifts; P series planetary gear reducer; H, B series of industrial gear bo
Shanghai Zeduo Electromechanical Equipment Co., Ltd. 产品样本
Chinese Name:上海泽铎机电设备有限公司
Recommended for:




Shanghai Ze duo Electromechanical Equipment Co. Ltd is a reducer, transmission equipment manufacturers of professional. Relying on perfect production equipment, professional R & D and production capacity, advanced management mode. Products with high efficiency, low cost, high
Chinese Name:上海泽铎机电设备有限公司
Recommended for:





Shanghai Ze duo Electromechanical Equipment Co. Ltd is a reducer, transmission equipment manufacturers of professional. Relying on perfect production equipment, professional R & D and production capacity, advanced management mode. Products with high efficiency, low cost, high
Shanghai Fengxin Transmission Machinery Co., Ltd. 产品样本
Chinese Name:上海枫信传动机械有限公司
Recommended for:




Shanghai Fengxin Transmission Machinery Co., Ltd. has two production bases in Shanghai and Shandong, with a total area of 300,000 square meters. The first phase of the project has a modern standard factory building of 60,000 square meters. The company's main product
Chinese Name:上海枫信传动机械有限公司
Recommended for:





Shanghai Fengxin Transmission Machinery Co., Ltd. has two production bases in Shanghai and Shandong, with a total area of 300,000 square meters. The first phase of the project has a modern standard factory building of 60,000 square meters. The company's main product
Tangshan City Hengxin confluence reducer 产品样本
Chinese Name:唐山市恒信减速机总汇
Recommended for:




Zhiyuan reducer Tangshan distribution department. The company since its establishment in 1970, the relentless pursuit of development performance more excellent reducer, reducer performance improvement of new ideas, products for its excellent performance awarded "provincial superi
Chinese Name:唐山市恒信减速机总汇
Recommended for:





Zhiyuan reducer Tangshan distribution department. The company since its establishment in 1970, the relentless pursuit of development performance more excellent reducer, reducer performance improvement of new ideas, products for its excellent performance awarded "provincial superi
Shanghai Lambo Transmission Machinery Co., LTD. 产品样本
Chinese Name:上海兰勃传动机械有限公司.
Recommended for:




R series helical gear reducer of hard-toothed surface S series helical gears - worm gear reducer, K series helical gears - spiral bevel gear reducer, F series parallel shaft helical gear reducer, T series spiral bevel gear steering box RV series aluminum alloy worm gear and worm
Chinese Name:上海兰勃传动机械有限公司.
Recommended for:





R series helical gear reducer of hard-toothed surface S series helical gears - worm gear reducer, K series helical gears - spiral bevel gear reducer, F series parallel shaft helical gear reducer, T series spiral bevel gear steering box RV series aluminum alloy worm gear and worm
Tianjin Ouhua reducer Co., Ltd. 产品样本
Chinese Name:天津市奥华减速机有限公司
Recommended for:




Tianjin Ouhua reducer Co., Ltd. is a production of cycloid pin wheel reducer, all kinds of couplings, explosion-proof motor, explosion-proof motor, variable frequency and variable speed motor professional factory, located in Tianjin municipality directly under the central governm
Chinese Name:天津市奥华减速机有限公司
Recommended for:





Tianjin Ouhua reducer Co., Ltd. is a production of cycloid pin wheel reducer, all kinds of couplings, explosion-proof motor, explosion-proof motor, variable frequency and variable speed motor professional factory, located in Tianjin municipality directly under the central governm
The enterprise information is being sorted out! 产品样本
Chinese Name:山东德州瑞隆机械有限公司.
Recommended for:




The enterprise information is being sorted out! The enterprise information is being sorted out!
Chinese Name:山东德州瑞隆机械有限公司.
Recommended for:





The enterprise information is being sorted out! The enterprise information is being sorted out!
Shanghai YinTong Reducer Company CO., LTD 产品样本
Chinese Name:上海寅通减速机总厂
Recommended for:




Shanghai Yin Tong Reducer Factory is specialized in producing Yin 021-36173321 pass card reducer, motor and other transmission equipment, professional production capacity at home. Production technology and market share based world leader in the international field of power transm
Chinese Name:上海寅通减速机总厂
Recommended for:





Shanghai Yin Tong Reducer Factory is specialized in producing Yin 021-36173321 pass card reducer, motor and other transmission equipment, professional production capacity at home. Production technology and market share based world leader in the international field of power transm
Shanghai Yuling Machinery Factory. 产品样本
Chinese Name:上海玉菱机械厂.
Recommended for:




The enterprise information is being sorted out! The enterprise information is being sorted out!
Chinese Name:上海玉菱机械厂.
Recommended for:





The enterprise information is being sorted out! The enterprise information is being sorted out!
Wenzhou Pingyang Xin Kai Transmission Machinery Factory 产品样本
Chinese Name:温州平阳鑫凯传动机械厂
Recommended for:




Road 2, Pingyang County Xin Kai transmission machinery factory is a direct manufacturer a series production of the reducer, gear box, large transmission equipment, is engaged in the transmission equipment manufacturing industry has been more than 20 years, products cover metallur
Chinese Name:温州平阳鑫凯传动机械厂
Recommended for:





Road 2, Pingyang County Xin Kai transmission machinery factory is a direct manufacturer a series production of the reducer, gear box, large transmission equipment, is engaged in the transmission equipment manufacturing industry has been more than 20 years, products cover metallur