HomeSupplier Discoveryarrow-rightTools & Hardwarearrow-rightDrill Bitarrow-rightApi Carbide Drill Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
Province & Region
More
about api carbide drill
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

api carbide drill100+ factories verified

YANTAI PANDA EQUIPMENT CO., LTD.

Main Products:
DTH Hammer, DTH Bit, Taper Drill Bit, Taper Drill Rod, Extension Rod, Thread Bit, Hydraulic Splitter, Rock Drill, Tricone Bit, Drag Bit
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Pandadrill, founded on 2008 year, is a specialized manufacturers and supplier of Rock Drilling Tools, Stone and demolition tools and consumables for quarrying, mining and construction with 10 years experiences.

Hebei Ruishi Bits Manufacturing Co., Ltd

20 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Tricone Bit, Drill Bit, PDC Bit
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hebei Ruishi Bits Manufacturing Co., Ltd., was founded in 1990, it is a professional company engaged in diamond drill bit and drilling tool research and development, design and manufacture, sales and service of specialized company. The company is located in Renqiu city which is rich in oil resources, Renqiu is also the location of Huabei oilfield.

Suzhou Energy Tool Co., Ltd.

Main Products:
PDC Drill Bit, Tricone Drill Bit, PDC Holer Opener, Tricone Hole Opener, PDC Reamer, Diamond Drilling Tool, Dht Hammer Bit
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Suzhou Energy Tool Co., Ltd. (short "EGT " ) is a high-tech company formed by a group of drill bit experts with over 20 years work experience in world top oil service companies such as  Smith, Baker Hughes and so on. EGT has cooperated with many research institutes and at home and has formed an advanced technological system basing on market-oriented and continuously promoting technological innovation and product improvement.

Hejian Hengji Bit Manufacture Co., Ltd.

Main Products:
Tricone Bit, PDC Bit, Hole Opener, Steel Tooth Bit, Tricone Cutters, Drag Bit, Bit Breaker, Subs
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hejian Hengji Bit Manufacture Co., Ltd is specialized in manufacturing high quality rock bit since 2001, especially for tricone bit, PDC bit, hole opener, single cone bit and drag bit. With advanced CNC machines and R&D team and on-time delivery. We have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices. We ship to more than 40 different countries and serve industries such as Oil & Gas, water well, Construction, Mining, Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe. Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop. Reduce the cost, Speed the drilling, Guarantee the safety is always our aim. We have been always insist on"Hengji bit, focusing on quality"

Weifang Sheng De Petroleum Machinery Manufacturing Co., Ltd.

21 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Downhole Motor, Oil Drilling Bit
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Our company, founded in 1991, is a private joint-stock enterprise. The company is located in the international kite capital, with a covering area of 32 000 m2 and building area of 18, 000 m2. It is adjacent with the national Bailang River Wetland Park, and has a good geographical location with convenient traffic and beautiful environment.

Outewei (Jiangsu) Machinery Technology Co., Ltd.

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Cutting Pick; Sleeve; Holder
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
In mining, efficiency is key. While continuous miners and longwall shearers enhance underground operations, their success relies on having the right components for the job. A mining pick must be durable, sharp, and ergonomically designed to withstand the harsh conditions of coal seams while minimizing physical strain on your machinery. We has a complete set of foundries and machining plant, advanced CNC machining centers and production equipment, and is equiped with experienced production technical inspectors and three-axis control product quality

Guangzhou International Technology Co., Ltd.

4.6
Main Products:
Drill Rig, PDC Bits, Tricone Bits, Roller Cone Bit, Drilling Machine, Impregnated Diamond Core Bits, DTH Hammer Drill Bits, Drilling Equipment, Drilling Tools, PDC Core Bits
Country/Region:
Hunan, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Guangzhou International Technology Co., Ltd. is a product group company mainly engaged in industrial equipment and accessories. In order to serve our customers better and professionally, the company has set up different specialized subsidiaries oriented by products, mainly including Pearldrill brand for drilling equipments, Foundream company for building materials, Kenergy for generators and solar products, etc. Pearldrill is one of our subsidiary companies that produces and sells drilling equipment and tools.

Shandong Seaco Machinery Equipment Co., Ltd.

5.0
Main Products:
Oil Equipment, Drilling Tool, Rig, Wellhead Equipment, Steel Tubing Casing, Drill Pipe, Oil Extraction Machinery and Accessories, Valves and Fittings, Marine Spare Parts
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Seaco Machinery Equipment co. Is a fast-growing professional petroleum equipment manufacturer and supplier, integrating petroleum equipment development & application and oilfield technical service into one. It is located in China's second largest oilfield - Shengli Oilfield, center of the Yellow River Delta city - Dongying City, Shandong Province.

Shaanxi Hainaisen Petroleum Technology Co., Ltd

13 yrs
·Manufacturer/Factory & Trading Company
Main Products:
PDC Drill Bit, PDC Cutter, PDC Insert, PDC Core Bit, Diamond Drill Bit, Diamond Cutter, PDC Bit, PDC Drilling Bit, Drill Bit, Steel PDC Drill Bit
Country/Region:
Shaanxi, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shaanxi Hainaisen Petroleum Technology Co., Ltd is a high-tech enterprise with independent intellectual property rights. It was established in 2013. The total investment amounts to CNY 50 million.

Dongying Tianrui Petroleum Technology Co., Ltd.

23 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Downhole Tool
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongying TIANRUI PETROLEUM Technology Co., Ltd., established in November 2003 and located in the Dongying Economic Development Zone, is an investment project in Dongying City. It is mainly engaged in the research, design, manufacturing and technical services of oil drilling and workover tools. The company consists of six departments and two workshops, namely the design department, the quality inspection department, the market operation department, the comprehensive department, the technical service department, the financial department, the processing workshop and the assembly workshop. It possesses rich R & D and design capabilities as well as manufacturing capabilities in oil drilling and workover tools.

Xingtai Hengchang Tools Co., Ltd

26 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Diamond Saw Blade, Grinding Cup Wheel, Diamond Core Drill, Diamond Grinding Wheel, Diamond Drill
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Xingtai Heng Chang Tools Co., Ltd, founded in 2001, covers an area of 18000 square meters, located in XingtaiCity, Hebei Province. The company is a high-tech enterprise which is specialized in R&D and production of diamondtools, including diamond saw blades series, grinding wheels series, geological drilling series, and mining tools, etc. There are more than 30 technicians in our company. And we have the overall advantage of advanced facility, modernized production and operation. Owing a good formula, advanced sintered technology, and unique weldingprocess, the company has met ISO9001 international quality system standards. We pay special attention to andguarantee the quality of products all the time. The company has its own self-management import and export rights. Our products have been sharing universal popularity and high reputation at home and abroad.

Ningbo Yinzhou Ternal Machinery Co., Ltd.

9 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Self-Drilling Anchor System, Earth Anchor, Continuous Thread Bolts, Expansion Shell Bolts, Concentric Casing System, Bushing, Threaded Bar, Hollow Bar, Grill Grouting, Investment Casting
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Since we established ourselves 10 years ago in a small city called Ningbo, we've been focus on the CNC machining industry. We wholeheartedly make one product only - Self drilling anchor system. We do it right and that why we are here. As a previously state-owned company, we have certain core competitiveness that benefit us to win a place in the market - highly resourceful, sufficient industrial investment and therefore a reasonable cost structure. All of these promote trust from our customers over the world. <br/><br/>In term of manufacturing process, we are in particular strong at forging, casting and machining. Our time-proof management process, plus the people behind this, create a real different to our competitor. The team, averaged 20 years of industrial experience, is our strong asset to success. <br/><br/>We focus on serving customers in the geotechnical industry and field. While we are serving clients over the world, we are in particular strong in self drilling anchor system, continuous threaded bar and concentric casing system. We provide both products and OEM service so please come and we are happy to discuss about your project. <br/><br/>Our advantages: <br/><br/>1. High-performance steel products<br/><br/>Our specialty anchoring system products make the clients' projects safer and more durable in geotechnical engineering. <br/><br/>2. In-house manufacturing<br/><br/>We develop special production lines for anchoring components using highly automatic and professional equipment to catch up with our increased orders. <br/><br/>3. Passionate Team<br/><br/>A strong engineering team is focused on the anchor system knowledge to participate in clients' projects from design, material selection, installation and onsite assistance. <br/><br/>Our driving goal: Offer the best global performance for our clients' geotechnical works, on all our markets

Chengdu Youcut Tools Co., Ltd

Main Products:
Cutting Tools, Tungsten Carbide Inserts, Turning Inserts, Milling Inserts, Grooving Inserts, Toolholder, Woodworking Blades
Country/Region:
Sichuan, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Chengdu Youcut Tools Co., Ltd is a professional cutting tools manufacturer which produces turning and milling inserts, grooving inserts, threading inserts, indexable inserts for aluminum, steel, cast iron, stainless steel, woodworking blades, carbide end mills, tool holder, face milling cutters and others with various physical and chemical coating grades.

Hejian Longyue Drill Bit Manufacture Co., Ltd.

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Drill Bit, TCI Tricone Bit, Stee Tooth Bit, PDC Bit, Roller Cones, Mud Motor, Hole Opener, Rock Reamer, Bit Stabilizer, Drag Bit
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Longyue Was established in 1998, located in Cangzhou which is in the industrial zone of Cangzhou city, and enjoys good location and convenient transportation. Longyue specializes in water well drill bits, oil well drilling bits, like: Tricone Bits (Steel tooth & TCI bit), Tri-cone Bit, Three cone bit, Tricone Drill bit, tungsten cabide inserted bits, Tricone rock bit, Milled tooth bit, Roller Cone Bits, matrix body PDC bits, steel body PDC bit, Reamer bit, drill pipe, drill collars, engineering bits, stabilizers, for water well, oil field, construction and underground foundation work all over the world. All of our products are in accord with API and ISO standards. <br/><br/>Longyue is registered with 10 million RMB capital, possesses over 1800 hectare area and 70 various manufacturing equipment. Our company has 100 employees, including three professors, 12 senior engineers and 37 intermediate technicians. <br/><br/>Advanced technology and equipment, excellent technicians, and scientific management will guarantee our products have superior quality, highly competitive prices and speedy delivery. Longyue products not only won the trust of domestic clients, but also are exported to USA, Middle East, South Africa. If you have any questions, please do not hesitate to contact us. Your any consultations will get our prompt and sincere reply. <br/><br/>We can design HY PDC bits by ourselves as your request and popular in the oil companies of domestic and overseas.

Qidong Fengsu Drilling Tools Co., Ltd.

5.0
Main Products:
PDC Drill Bits, Drill Bits, Water Drill Bits, Oil Dirll Bits, Machine Spare Part, Tricone Drill Bit, Tire Core Bits, DTH Bits, Bits, Tools
Country/Region:
Hunan, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hunan speedmade drill bit. Co, . Ltd has been in the drilling industry for 15 years, is a professional manufacturer specializing in drilling bit tools, integrating R&D, production and sales. Through hundreds of times tested by the rig, we observe the drilling condition of the bit and adjust repeatedly, we have developed more than ten products categories, hundreds of different drill bits. We can customize different products according to the needs of customs. Our goal is to improve drilling efficiency and reduce drilling costs.

Beijing Haichuang Unite Technology Co., Ltd.

12 yrs
·Trading Company
Main Products:
Drilling Rig, Drilling Bit, Drilling Rod, Rock Drilling Jumbo, Drilling Rig Parts
Country/Region:
Beijing, China
Company Profile:
Beijing Haichuang Unite Technology Co., Ltd. Was founded in 2015, located in Beijing. We are a specialized company in engineering, mining integrated machine and spare parts selling. We are committed to supplying professional, high-performance equipment and spare parts for clients at home and abroad. Our products are involved in mining, quarrying, highway building, water conservancy, railroad building, road and bridge construction, petroleum, chemical industry, power generation, metallurgy and other machinery industries.

Shandong Kangheng Cnc Technology Co., Ltd

3 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Various CNC tools, metalworking cutting fluids, measuring tools, smart cabinets, tool carts, and other machine tool accessories
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Weifang Kangheng CNC Tools Co., Ltd. Was established in 2008. It has a solid carbide drill and milling cutter production grinding center and a blade pressing workshop. It is a company integrating production and sales of industry and trade. Mainly serving machinery processing and manufacturing enterprises and distributors in various countries around the world. Sales included imported Brands: Seco, Titex, Walter, TITEX, Valenite, DORMER, Kennametal, Mitsubishi, Sumitomo, Kyocera Ceratip, Tungaloy, OSG, Dijet, NACHI, Hitachi Tool, Big, Iscar, Mo Case Sol, Vargus, Guehring, Schunk, Ceracizit, Taegutec, Korloy, and YG etc. Domestic Brands: ZCC. CT, Zigong Greatwall, Zhuzhou Jingcheng, Jiangxi Zhangyuan, Jiangxi Tianhe, Chengdu Engga, Harbin First Tools, LINKS, Southwest Tools, Chengdu Measuring Tools, Shanxi Cemented Carbide, Zhuzhou Cemented Carbide and STWC etc. The product range is very wide. It also operates CNC machine tools, hydraulic chuck machine accessories, and provides CNC machine tool maintenance services. Weifang Kangheng has always advocated the business philosophy of "Diligence and innovation, customer satisfaction, harmony and win-win"depeng onf product quality and sicere service to expend the market, and depend on continuous development and improvement to meet customers demand. At present, our company has established long-term cooperation with many companies in the world, Welcome to friends all over the world to cooperation and negotiation.

Changsha Fast Drill Engineering Machinery Co., Ltd.

2 yrs
·Trading Company
Main Products:
Core Drilling Rig, Drilling Rig, Diamond Core Bit, PDC Bit, Geotechnical Investigation Drilling Rig, Mining Exploration Drilling Rig
Country/Region:
Hunan, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
ChangSha Fast Drill Engineering Machinery Co., Ltd., a subsidiary of Hunan DiFan Geological Equipment Co., Ltd., has been based in the picturesque city of Changsha, Hunan Province, since its establishment in 2008. Our products are extensively used across various industries including geological exploration, hydropower construction, building surveying, drilling projects, oil extraction, coal mining, and mineral exploration. We specialize in the production of thermally pressed diamond drill bits, electroplated diamond drill bits, polycrystalline diamond compact (PDC) drill bits, reamers, geological drill rods, and pipes, as well as the operation of drilling rigs, water pumps, and related accessories.

Yancheng Xinyongjia Petroleum Machinery Manufacturing Co., Ltd.

Main Products:
Downhole Motor, Drilling Mud Motor, Pdm Drill, Drill Collar, Mwd Drill Pipe, Drill Pipe, Diesel Generator, Diesel Engine, Diesel Pump, Hwdp
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Incorporated in August 2005, Yancheng Xinyongjia Petroleum Machinery Manufacturing Co., Ltd. is a first-class network enterprise of PetroChina &Sinopec and a national high-tech enterprise in Jiangsu Province, east China. The company has passed API and UDEM international certification, ISO9001: 2008 quality management system certification, ISO14001: 2004 environmental management system certification and OHSAS18001: 2007 occupational health and safety management system certification. The company has a registered capital of $15 million and covers an area of 50000 square meters.

Zhejiang Sanrock Supply Management Co., Ltd.

Main Products:
Core Drilling Rig, Pile Drilling Rig, Solar Pile Drlling Rig, Rotary Drilling Rig, DTH Drilling Rig, Blasting Drilling Rig, Pneumatic Rock Drilling Rig, Underground Jumbo Drilling Rig, Drill Rod, DTH Drill Hammer
Country/Region:
Zhejiang, China
Sample Service:
Sample Available
Company Profile:
Zhejiang Sanrock Supply Management Co., Ltd is a leading manufacturer in the field of mining and construction equipments manufacturing. We provide a wide range of drill rigs, air compressors, construction equipments, drilling tools and consultancy services. Sanrock is well recognized in Chinese industry and rapidly expanding to the International market. We have earned our well-regarded reputation and business strength through our emphasis on providing continuous investments in new research and technology to advance product quality and meet International Standards of Excellence. Our Global Services & Support Center is composed of professional and experienced team and staff who work to serve our customers and their business needs to their satisfaction. Sanrock staff possess a wealth of experience not just in the China, but also in the international market. A strong support center and high standard products are further enhanced by our management's innovative thinking, and their dedication to maintaining the company's position at the forefront of development in mining and construction equipment. Sanrock is not only a manufacturer, but also a brand at world, we always at effort and extension of the fields, looking forward to the cooperation with you.

Hejian Dingtong Drill Bit Manufacturing Co., Ltd

14 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Air Drilling Bits, Non-sealed Bits, Steel Tooth Hole Opener, Metal Sealed With Roller Bearing, Metal Sealed With Journal Bear, Rubber Sealed With Journal Bearing, Rubber Sealed With Roller Bearing
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hejian Dingtong Drill Bit Manufacturing Co., Ltd. is located in Junzi Hall Development Zone, Hejian City, Cangzhou, Hebei Province, 166km away from the Economic and Technological Development Zones along China National Highway 106. It is adjacent to Baocang Expressway in the south, Daguang Expressway and Beijing-Hong Kong-Macao Expressway in the west, and Beijing-Shanghai Expressway in the east, enjoying a superior geographical location and convenient transportation.

Shijiazhuang Jimai Machinery Equipment Technology Co., Ltd.

Main Products:
Drilling Rig, Drilling Equipment, Water Well Drilling Rig, Blowout Preventer, Borehole Drilling Rig, Water Well Drilling Machine, Petroleum Equipment, Pump Spare Parts, Mud Pump, Manual Casing Tong
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shijiazhuang Jimai Machinery Equipment Technology Co., Ltd is a large-scale professional manufacturer of drilling rigs and water well rigs in Hebei Province, China. It includes 5 series and more than 50 kinds of products. The leading products are: XY series core drilling rigs, JM series water well drilling rig, casing drilling series, as well as mud pumps, drill pipe series, etc.

Dongying Lake Petroleum Technology Co., Ltd.

15 yrs·5.0
·Trading Company
Main Products:
Bucking Unit, Cementing Hose, Mud Pump Liner, Mud Pump Piston, Fluid End Module, Plug Valve, Swivel Joint, Hammer Union, BOP, Drilling Spool
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Dongying Lake Petroleum Technology Co., Ltd (Lake Petro) is a one-stop oil service company with 15 years of work experience in oil and gas fields. We have served over 300 clients in over 30 countries and regions, involving oil and gas, water wells, mining, geology, oceanography, etc. We commit to provide the best products and services to our customers worldwide.

Hangzhou Fanxi Tools Co., Ltd.

4.7
Main Products:
Drill Bits, Saw Blades, Tct Saw Blades, Diamond Saw Blades, Abrasive Wheel, Flap Disc, Sanding Disc, Hole Saw, Chisel, Grinding Wheel
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
We're supplier of drill bits as HSS twist drill bits, masonry drill bits, electric hammer drill bits, wood working drill bits, carbide drill bits, SDS Plus drill bits and combination drill bit sets etc. And saw blades as diamond saw blades, tct saw blades, circular saw blades, other power tools accessories as abrasive wheel, flap disc, sanding disc, hole saw, grinding wheel, cutting disc, drill chuck, screw driver bit, chisel, countersink etc...The company carries out the company policy that "every product is good, quality is prime, all staffs do theirs duty to make customers satisfactory", it takes good quality and perfect after service as its management goal. The company possesses normative management, advanced production equipment, perfect testing instrument and reliable quality.    The products are widely exported to Europe, America, Africa, Southeast Asia and other countries and regions, and enjoyed high reputation.   We would like to supply quality products, best prices & Services for you! And we sincerely welcome all friends to expand our business co-operations together.

Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.

Main Products:
API 5CT Tubing and Casing Pipe, API 5CT Tubing and Casing Pup Joint, API 5CT Tubing and Casing Coupling, Down Hole Tools Cementing Tools
Country/Region:
Tianjin, China
Sample Service:
Sample Available
Company Profile:
Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd. Was founded in 1999, mainly engaged in oil pipes and pipe fittings, oil special drilling and production tools and oil automation equipments. The company is named as national integration and standard implementation enterprise, a national science and technology-based small and medium-sized enterprise. With honors of"Henan enterprise technology center", "Henan postdoctoral innovation practice base", the company hold 35 senior engineers, engineers and technicians, and has successively obtained ISO9001 Quality system certificates, API 5CT certificate authorized by American Petroleum Institute and BV Quality supplier evaluation certificate issued by company of France. Owing more than 30 independent intellectual property rights, forming an industrial chain integrating design, development, manufacturing, testing and experiment of numerical control automation equipment for petroleum machinery products, which can meet customers' demand for products Full cycle service.

Changsha Tianhe Drilling Tools and Machinery Co., Ltd.

24 yrs
·Manufacturer/Factory
Main Products:
DTH Hammer, DTH Bits, Casing Systems, Drill Pipe
Country/Region:
Hunan, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Changsha tianhe drilling machinery Co., Ltd. Was established in 2002. We are a professional geotechnical drilling production enterprise integrating scientific research, design, production, sales and management.
17