China Three Lobe Roots Blower manufacturer
B-Tohin Machine (Jiangsu) Co., Ltd.

Professional Manufacturer of Various Kinds of Blowers


B-Tohin Machine (Jiangsu) Co., Ltd.

A few words about us
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B-Tohin Machine (Jiangsu) Co., Ltd.


B-Tohin Machine (Jiangsu) Co., Ltd. is a foreign invested enterprise established in 1994. It is located at Yixing Industrial Park for Environmental Science & Technology, one of State High-Technology Development Zones. With total registered capital of RMB 80 million and total investment of RMB 160 million B-Tohin is engaged in production and sales of HC blower, BK and YU Roots blowers, anti-corrosion and anti-explosion stainless steel Roots blowers, gear speed-up centrifugal blower, multi-stage centrifugal blowers and in the sales of other supporting products for water treatment in environmental protection, such as water pump (YU, WQ submersible pump, YYOW split case pump), mixer, dewatering machine, etc. By the purchase of a new building of 26000 m2 area in Yixing Economic Development Zone in 2015, the expansion of production scale is supported.



B-Tohin’s products have been widely used in various industries, including water treatment, construction material and cement manufacture, chemical industry, electricity, petroleum, steel, metallurgy, mine, food convey lines, etc., enjoying a good reputation among customers both in the overseas and domestic market.



In the company’s Research and Development Center, a technical innovation team composed of professor level Senior Engineers, Doctors, Masters and many undergraduates, is aiming at the service for environmental protection by tracing and developing the products of high level.



B-Tohin has made great investment in introducing CNC, full-automatic digital control lathes, CMM and other advanced equipment to ensure good quality. A complete set of advanced horizontal OKUMA CNC was introduced specially for the fine finish machining of blower cylinders and end-covers; a NC machine was imported for the processing of blower parts; a Taiwan Dahlih-made CNC was equipped for machining the parts of middle and large size blowers; and several back-forth curve machining planers were introduced for solving the problem of shapers’ precision problem. This kind of planer ranks among the advanced level in China which is specially designed for curve machining of blower rotors. In the beginning of 2015, we cooperated with Testing Laboratory of Shenyang Blower Research Institute (Quality Supervision & Inspection Center for Blowers of China Machinery Industry), and a whole set of blower performance test system was designed for us according to the Roots Blower Industry Standard by the Laboratory.



Passed the certification of ISO9001 & ISO 14001:2400, the company has been nominated as “High & New-tech Enterprises of Jiangsu Province” and “Pneumatic Technology Research Center of Jiangsu Province”. In successive seven years, B-Tohin has been honored as “Favorite Brand of Users in Water Treatment Industry” and “Main Enterprise in Chinese Roots Blower Industry” in 2014, it has been awarded the title of “2014 Top 10 Brands in Chinese Water Industry” on website.



Being a member of National Commission for Pneumatic Conveying and National Technical Committee of Standardization of Blower, and one of the sponsors of National Union of Environmental Protection Equipment Brands, B-Tohin Machine has been an excellent and famous enterprise in environmental protection blower industry.



B-Tohin’s tenet of “Eternal pursuit of improving, eternal promise of satisfying customers” and spirit of “Together with Heat” are always kept in every employee’s mind and in every step of company management. All the honors belong to the past only, people of B-Tohin will make every endeavor to design and manufacture more perfect products for contributing more to the related industries both at home and abroad and to our domestic machinery industry.

Company Details

Main Market

North America

South America

Western Europe

Eastern Europe

Eastern Asia

Southeast Asia

Middle East




Business Type






Trading Company


Brands : BK

No. of Employees : 280~320

Annual Sales : 38000000-40000000

Year Established : 1994

Export p.c : < 10%

Company History

Mar-95 The first set of B-Tohin assembled HC blower and roots blower were completed and delivered to customer.
Dec-94 Sino-Japanese invested Company "Yixing Pengde Co., Ltd." established
Sep-00 started mass production of BK three-lobe roots blower after the first set developing product was completed and passed the quality test of TUTHILL Corp. in American.
Dec-99 Invested a joint venture "Tuthill and Tohin Machine Co., Ltd." with TUTHILL CORPORATION/PNEUMATICS GROUP
Nov-99 Finished development of BG series stain-less screen and began mass production
Aug-97 started to make HC bases and belt covers for Tohin Co. in Japan
Apr-97 The first set of localized HC blower came out.
Jan-97 TOHIN INDUSTRY CO., LTD became a new investor by putting 30 million yen in and the total registered capital was 130 million yen.
Aug-96 started manufacturing of BG stain-less screen
Jun-96 Pengyao Co. transferred its share to Japanese companies, and "Yixing Pengde Co., Ltd." became "B-Tohin Machine (Jiangsu) Co., Ltd."
Jan-96 The registered capital was increase to 100 million yen
04-Jul New workshops and office building
04-Mar Co-operated with TUTHILL GROUP for development of high-pressure and double-stage blower and succeeded
04-Jan Invested RMB 500 thousand yuan to Jiangxi Yiang Qinghu B-Tohin Middle School
03-Dec Increased by 50 million yen and made Registered capital be 180 million yen and total investment be 250 million yen
03-Sep Passed the certification of "High-tech Enterprise of Jiangsu Province" again
02-Dec passed the certification of ISO9001:2000
02-Sep BK blower ranked “High-tech Products of Jiangsu Province”
01-Oct Passed the certification of "High-tech Enterprise of Jiangsu Province"
01-Jul HC blower ranked “High-tech Products of Jiangsu Province”
9-Oct started to use New-constructed workshop and warehouse
8-Oct Passed the certification of "High-tech Enterprise of Jiangsu Province" again
8-Sep BZ blower won 2008 Forth China International Fluid Machinery Exhibition Golden Prize.
8-Jun Monthly sales surpassed RMB 20 million yuan.
7-Dec Co-operated with Jiangsu Yiyou Machinery Co. for production and sales of various pumps and mixers
7-Nov Total investment reached 450 million yen after Japanese Board of Directors increased registered capital by 150 million yen.
6-Nov BZ blower won 2008 Forth China International Fluid Machinery Exhibition Golden Prize.
6-Oct started the sales of new-developed BK-DS blower both at home and abroad (first set exported to Belgium)
12-Nov Passed the CE certification
12-Jul Named as Favorite Brand of Users in Water Treatment Industry
12-Jun Attended Shanghai International AQUATECH China Exhibition
11-Oct Office Automation Soft successfully used in whole company
11-Sep 5S Management adopted and sound eft achieved
11-Feb BK blower ranked “High-tech Products of Jiangsu Province”
10-Oct granted with the certificate of “ISO 14001 Environmental Management System” by China Quality Certification Center
10-Aug approved by Jiangsu Science & Technology Bureau as “Pneumatic Technology Research Center of Jiangsu Province”
10-Jun single-stage high-speed centrifugal blowers tested successfully and related sales started
10-Jun awarded “Satisfied Brand for Water Specialists” by China H2O net ( and Environment & Engineering of Dept. of Tsinghua University
10-Feb started sales of multi-stage centrifugal blowers
13-Sep Total investment reached RMB 160 million yuan after registered capital increased to 80 million yuan.
13-Jul Named as Favorite Brand of Users in Water Treatment Industry
13-Apr Total investment reached RMB 100 million yuan after registered capital increased to 50 million yuan.
14-Apr Jiangsu B-Tohin Energy-saving Co., Ltd. was established.
14-Apr Development of new MVR steam compressor succeeded.
14-Jun Nominated as High-tech Enterprise of Jiangsu Province again.
14-Aug Introduced ATB air bearing blower from Korea
14-Nov “B-Tohin” was certified as the “Top 10 Brand of China Water Industry” by
14-Dec Improved the precision of inspection instruments of blower’s gear, bearing and oil seal which insured the parts’ quality
15-Jan Sales Value of Roots blower ranked second in China by China General Machinery Industry Association fluid machine branch’ statistics
15-Mar Co-operated with the Blower Test Laboratory of Shengyang Blower Research Institute (Blower Quality Supervision Testing Center of China General Machinery Industry Association), introduced the whole set of blower performance test system and got verification certificate
15-May Bought new factory of 26000M2 in Yixing Economic Development Zone
15-Jul Awarded “Most Valuable Environmental Protection Equipment of China in 2014-2015”
15-Dec Wuxi B-Tohin Blower Technology Co., Ltd. was established in Yixing Economic Development Zone.




Company Service


Pre-sales Service
1. Provide technical advisory services to assist customer in selection;
2. Provide customers with the necessary technical information, drawings, etc;
3. Welcome new and old customers to visit our factory and have discussions with us at any time.


Sales Service
1. Provide customers with drawings of equipment, piping and foundation required by customers' site design;
2. Answers questions about specifications, performance, parameters, etc, and recommend the most appropriate solution, the most cost-effective products to customers;
3. Immediately after signing the contract, we make production planning for timely delivery.


After-sales Service
1. Provide technical advice during installation process;
2. When the equipment is ready for commissioning, as per request, we can offer free commissioning service for blower package. The service is only available for sites located in China, and the commissioning usually takes two days. If your site is located outside of China, the service will be subject to further discussion;
3. Build detailed user profiles and send regular letters to offer guides for maintenance and repair;
4. In warranty period, if a quality-related problem occurs in normal use, please send a written description of the problem to us. We will respond within 24-48 hours.
5. Even if the warranty has expired, we are still glad to solve problems that are not due to improper use for you. All repairs will be billed at cost, and for long term, we supply spare parts at favorable price.


1. What products do you have?
Our main products include roots blower, rotary blower, centrifugal fan, side channel blower, submersible sewage pump, centrifugal pump, submersible mixer and other water treatment equipment.


2. What is the purpose of your products?
Our products are widely used in environmental protection, electricity, water, chemicals, building materials and other industries.


Air blowers can be used for:
a. aeration and backwash in sewage treatment plant;
b. desulfurization and ash removal in power plant;
c. pneumatic conveying and pipeline cleaning in cement plant and food industry; d. aquaculture oxygen supply .


Water pumps can be used for:
a. drainage of sewage with solids, waste water, rain water and urban water supply;
b. garden irrigation;
c. fire fighting pressure boosting; d. long-distance carriage of water.


Submersible mixers can be used for:
a. treating municipal sewage and industrial waste water;
b. mixing and densification of sludge water.


3. What is your advantage over other suppliers?
Our company was started in 1994 and has nearly 20 years of production and sales experience. We have advanced production and testing equipment, strict quality control process, and dedicated R & D department. Our products are well-received at home and abroad.

Quality, price, workmanship, and service are prior concerns of customers. In the above aspects, we all show our unparalleled strength. Please read more about us on our website.


4. How shall I choose the right model?
Here we list the factors that should be taken into consideration when you determine the models and quantities:

a. fan selection: working environment,gas composition, pressure, air capacity.
b. pump selection: working environment, media, head, flow.
c. mixer selection: working environment,tank shape, tank depth, water depth.


5. Can you offer some customer cases for our reference?
Please refer to the corporate information-Sales Records.


6. Can I get a good price?
Our products are reasonably priced to be cost-effective. Please send your inquiry to, or call +86-510-87072125, and we will reply to your request within 24 hours.


7. How shall I pay?
T / T and L / C payments are workable for us.


8. How long does the delivery take from you?
Delivery date depends on the model, specification and quantity required. When we make a quotation, we will separately state the delivery date. If you want an earlier delivery, we will try to make shift.


9. Will you keep me updated about how is the production going?
Yes, of course. After your ordering, we will send timely report on the progress to you.


10. How will the goods be packed?
Our products are generally packed in wooden cases. The wooden materials have been fumigated to meet the requirements of ISPM15.


11. How long is the warranty?
The warranty starts from the date of BL (AWB) and lasts for 12 months.


12. How can I get the right spare parts for your products?
Every piece of our product has a serial number, and the serial number is equivalent to an identity of the machine. To get spare parts, please contact us and told us the serial number, we will provide you with the appropriate equipment parts in accordance with the terms of warranty.


13. Do you provide on-site installation and commissioning services?
We can provide on-site installation and commissioning services according to your requirements. Details and pricing of the services will be subject to the specially signed foreign technical service contract.


14. Do you provide operator training services?
We can provide operator trainings based on your requirements. The training will be given in line with the specially signed training agreement.


15. If the product fails, how should we do?
When failure occurs, please send a description of the failure in words and pictures to us. We will respond within 24 hours after receipt of your notice, and give solution proposals within 48 hours.


Company Team

1 B-Tohin Organization chart


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 0

  2 Departments of Company


1 )  Administrative Department


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 1


Administrative departments are mainly responsible for personnel use, daily affairs management and





2 )  Finance Department


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 2


The finance department is mainly responsible for financial settlement and other related matters.



3 )  Technical Department


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 3


The technical department is mainly responsible for the daily technical problems, the development of new


products and new patented inventions.



4 )  Product Department


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 4


The production department is responsible for the continuity of production to support the normal operation of the


sales department and the important guarantee for the development of the city company.



5 )  Sales Department


China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 5


The sales department sells the company's products to all parts of the world, making BK famous at home and





3 Culture of Company


The annual party building activities


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The annual celebration


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The travel of company


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Other activities




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China B-Tohin Machine (Jiangsu) Co., Ltd. company profile 10


Badminton game


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Basketball march


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2018 Yixing international marathon


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B-Tohin Machine (Jiangsu) Co., Ltd.
Yong'an Road, Industrial Park for Environmental Science & Technology, Yixing City, Jiasngsu Province 214205, China
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