Home
Supplier Discovery
Tools & Hardware
Drill Bit
Insert Rock Bit Factories & Companies
Filter
Category
Chemicals
Construction & Decoration
Electrical & Electronics
Manufacturing & Processing Machinery
Metallurgy, Mineral & Energy
More
Management Certification
Others
ISO9001:2015
ISO 9001
ISO45001:2018
OHSAS/ OHSMS 18001
More
R&D Capacity
OEM
ODM
Own Brand
Others
Annual Revenue
<1 Million USD
1 ~ 2.5 Million USD
2.5 ~ 5 Million USD
5 ~ 10 Million USD
10 ~ 50 Million USD
More
No.of Employees
Less than 5 People
5-50 People
51-200 People
201-500 People
501-1000 People
Province & Region
Anhui
Beijing
Chongqing
Fujian
Guangdong
More
about insert rock bit
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
insert rock bit
200+ factories verified
Sinotai Petroleum Equipment Co., Ltd
18 yrs
·
Trading Company
Send Inquiry
Tricone Drill Bit TCI Tungsten Carbide Insert Roller Cone Bit for Oil Well Hard Rock Drilling
US$
500.00
1 Piece
(MOQ)
Tungsten Carbide Insert Bit Single Piece Engineering Roller Cone Rock Drill Bit for Well Drilling
US$
500.00
1 Piece
(MOQ)
API Factory 7-5/8inch Drill Bit TCI Tricone Rock Tungsten Carbide Insert Bit for Well Drilling
US$
500.00
1 Piece
(MOQ)
Drill Accessories TCI Tungsten Carbide Insert Roller Tricone Rock Bit for Oil Gas Drilling
US$
500.00
1 Piece
(MOQ)
1/4
Hejian Hengji Bit Manufacture Co., Ltd.
Send Inquiry
9 7/8'' 250.8mm IADC 517 Tungsten Carbide Insert Rock Bit
US$
500.00
-
1,500.00
1 Piece
(MOQ)
6 3/4'' 537 Rotary Tricone Carbide Insert Rock Drill Bit
US$
100.00
-
1,000.00
1 Piece
(MOQ)
12 1/4'' IADC 637 Conical Tricone Drill Insert Bits Hard Rock
US$
500.00
-
3,000.00
1 Piece
(MOQ)
23'' Inch Insert Tooth Tricone Rock Roller Bit
US$
100.00
-
8,000.00
1 Piece
(MOQ)
1/4
Glorytek Industry (Beijing) Co., Ltd.
5.0
Send Inquiry
17 1/2" Big Diameter Tungsten Carbide Insert Rock Drill Tricone Bits
US$
8,000.00
1 Piece
(MOQ)
Insert Tooth Bit Tricone Bit 8 1/2 Inch TCI Roller Bits Hard Rock Drill Bit
US$
1,000.00
1 Piece
(MOQ)
IADC Insert Tooth Bit Tricone Bit Hard Rock Drill Bit for Well Drilling
US$
1,000.00
1 Piece
(MOQ)
Factory Price High Quality Tricone Bit Drill Bit Drilling Tool Water Well Drilling Mining
US$
1,000.00
1 Piece
(MOQ)
1/4
HEJIAN YINHAI ROCK BITS MANUFACTURE CO., LTD.
15 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
API Tricone Bit 17 1/2" IADC517 Carbide Inserts Bits/Rock Drill Bits
US$
2,999.00
-
3,999.00
1 Piece
(MOQ)
12 1/4" IADC517/537g Tungsten Carbide Inserts Bit/Rock Drilling Bit/Tricone Bit
US$
999.00
-
1,799.00
1 Piece
(MOQ)
API Tricone Bit 15 1/2" IADC537 Carbide Inserts Bits/Rock Drill Bits
US$
439.00
-
5,499.00
1 Piece
(MOQ)
API Tricone Bit 17 1/2" IADC517 Carbide Inserts Bits/Rock Drill Bits
US$
5,199.00
-
5,599.00
1 Piece
(MOQ)
1/4
Hejian Dingtong Drill Bit Manufacturing Co., Ltd
14 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Industrial Insert Tooth Tricone Drill Bit for Hard Rock Drilling
US$
500.00
-
3,000.00
1 Piece
(MOQ)
Hard Rock Drilling Tricone Bit, Insert Tooth Type, Reliable Quality Made in China
US$
366.20
-
5,042.96
1 Piece
(MOQ)
Hard Rock Drilling Tricone Drill Bit; Insert Tooth Type, Direct Overseas
US$
366.20
-
5,042.96
1 Piece
(MOQ)
Precision-Made Insert Tooth Tricone Drill Bit for Hard Rock Drilling
US$
500.00
-
3,000.00
1 Piece
(MOQ)
1/4
Suzhou Energy Tool Co., Ltd.
Send Inquiry
Tungsten Carbide Insert Tricone Drill Bit for Hard Rock Well Drilling
US$
1,000.00
-
5,000.00
1 Piece
(MOQ)
Steel Body PDC Carbide Insert Petroleum Rock Drill Bit
US$
2,000.00
-
8,000.00
1 Piece
(MOQ)
Rock Drilling Tools of 12 1/4 Inch Diamond Insert PDC Drill Bit
US$
9,000.00
-
15,000.00
1 Piece
(MOQ)
6 Inch Oilfield Drilling Tools of Insert Rock PDC Drill Bit
US$
2,000.00
-
5,000.00
1 Piece
(MOQ)
1/4
Hebei Ruishi Bits Manufacturing Co., Ltd
20 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
17-1/2 Steel Tooth Mining Rock Well Drilling Bits Oilfield Tungsten Carbide Inserts TCI Tricone Roller Bit API 7-1 Oil Petroleum 7" Milled Tooth Roller Bit
US$
1.00
-
5,555.00
1 Piece
(MOQ)
14-3/4 Inch Oilfield Well Tungsten Carbide Inserts TCI Tricone Roller Bit 17-1/2 Water Well Milled Tooth Drill Tools Mining Rock Well Drilling Steel Tooth Bits
US$
1.00
-
5,555.00
1 Piece
(MOQ)
Ruishi Bits 17-1/2 Inch Tungsten Carbide Inserts Bit API 7-1 Water Well Drilling TCI Bit Milled Tooth Steel Tooth Oilfield Mining Rock Well Tricone Roller Bits
US$
1.00
-
5,555.00
1 Piece
(MOQ)
Best Quality and Price IADC 537 537g Rock Drilling Insert Tooth Bit Tricone Drill Bit for Well Drlling or Mining
US$
8,800.00
1 Piece
(MOQ)
1/4
Wuxi Geotec Geological Equipment Co., Ltd.
16 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
PDC Best Drill Bit Non Coring PDC Insert Rock Bit
US$
105.00
-
150.00
1 pieces
(MOQ)
Crown Non Coring PDC Insert Rock Bit 65mm PDC Non-Core Bits on Sale
US$
90.00
-
150.00
1 pieces
(MOQ)
Tungsten Carbide Drill Bits Scrap Insert Water Well Hard Rock Tc Drilling Bits
US$
80.00
-
150.00
1 pieces
(MOQ)
06/08/13/16 mm Non Coring PDC Insert Rock Bit 65mm
US$
250.00
-
390.00
1 pieces
(MOQ)
1/4
YANTAI PANDA EQUIPMENT CO., LTD.
Send Inquiry
Made in China CS Tricone Drill Bit 9 5/8" Insert Tooth Tricone Rock Roller Bit/Oil Drilling Equipment Steel Tooth Rock Bit
US$
200.00
-
15,000.00
1 Piece
(MOQ)
Used Insert Tooth Tricone Rock Roller Bit
US$
200.00
-
15,000.00
1 Piece
(MOQ)
PDC Inserts for Mining Tools Supply PDC Step Drag Bit for Drilling Steel Body PDC Rock Bit
US$
200.00
-
9,000.00
1 Piece
(MOQ)
Factory Directly Provide Hard Rock Mining with Carbide Insert TCI Rotary Roller Rock Bit Drill Mining Rock Drillhead
US$
200.00
-
15,000.00
1 Piece
(MOQ)
1/4
Xiamen Sansung Mining Equipment Co., Ltd.
13 yrs
·
Trading Company
Send Inquiry
DTH Rock Drilling Bit with Carbide Insert Buttons
US$
50.00
-
3,000.00
10 Pieces
(MOQ)
Tungsten Carbide Insert Rock Drill Taper Button Bit
US$
4.00
-
20.00
10 Pieces
(MOQ)
Water Well Drilling and Stone Mining Three Cone Roller TCI Insert Rock Tricone Bit
US$
1,500.00
-
3,000.00
1 Piece
(MOQ)
R32 Drifting and Tunneling Underground Rock Drilling Thread Button Bit with Carbide Insert
US$
25.00
-
65.00
10 Pieces
(MOQ)
1/4
Hejian Longyue Drill Bit Manufacture Co., Ltd.
10 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Water Well PDC Inserts Steel Body PDC Rock Bit
US$
1,000.00
-
3,000.00
1 Piece
(MOQ)
10'' Water Well PDC Inserts Steel Body PDC Rock Bit
US$
800.00
-
1,000.00
1 Piece
(MOQ)
215.9mm Insert Steel Tooth Tricone Rock Roller Bit Oil Drilling Equipment
US$
800.00
-
1,000.00
1 Piece
(MOQ)
Tricone Auger with Tungsten Carbide Insert Teeth Rock Bits
US$
1,800.00
-
2,000.00
1 Piece
(MOQ)
1/4
Zhuzhou Better Tungsten Carbide Co., Ltd.
Send Inquiry
PDC Cutters/ Diamond Rock Cutters/ PDC Drill Bit Inserts
US$
15.00
10 Pieces
(MOQ)
PDC Cutter 1613 PDC Rock Bit Cutter Insert
US$
5.00
-
30.00
1 Piece
(MOQ)
Tungsten Carbide Rock Button Drill Bit
US$
50.00
-
70.00
1 kg
(MOQ)
Polycrystalline Diamond Compact Cutter Insert for Oil Drill Bit, PDC Drill Bit, PDC Buttons for Geology
US$
46.88
-
62.80
5 kg
(MOQ)
1/4
Guangzhou International Technology Co., Ltd.
5.0
Send Inquiry
Professional Drilling Bits Tricone Rotary Three Cones TCI 6-Inch Insert Tooth IADC537 Tricone Well Rock Three Wings Drilling Bit
US$
200.00
-
800.00
1 Piece
(MOQ)
241.3mm Tungsten Carbide Insert Tricone Bit Rock Bit for Water Oil Gas Well Drilling Petroleum Drilling.
US$
200.00
-
17,000.00
1 Piece
(MOQ)
Rock Roller Cone Drill Bit Rotary a P I Three Cones Bit TCI Tricone Rock Bit Customized Insert Tooth Tricone Bit 6 1/2 Inch IADC Code 537 617 637 Custom Models
US$
300.00
-
1,000.00
1 Piece
(MOQ)
PDC Drill Inserts Mining Drill Pipe Sintering Tungsten Carbide PDC Bit for Hard Rock Drilling
US$
45.00
-
445.00
1 Piece
(MOQ)
1/4
Hunan Hippo Drilling Tool Co., Ltd.
5.0
Send Inquiry
Water Well PDC Inserts Drill Bits Rock Bit 1305
US$
60.00
-
850.00
1 Piece
(MOQ)
Hippo Factory PDC 1305 1308 Insert Drill Bit Hard Rock Bits Price
US$
50.00
-
800.00
1 Piece
(MOQ)
Made in China 6 1/2" Water Well PDC Inserts for Drill Bits PDC Rock Bit
US$
80.00
-
600.00
1 Piece
(MOQ)
5 1/4 Inch 6 1/2" Five Wings Water Well Concave PDC Inserts Drill Bits Rock Bit 1304
US$
50.00
-
500.00
1 Piece
(MOQ)
1/4
Cangzhou JW Petroleum Machinery Co., Ltd.
Send Inquiry
8 3/4'' Deep Well Insert Tooth Tricone Rock Bit Rotary Bit
US$
1,150.00
1 Piece
(MOQ)
TCI Insert Teeth Tricone Button Rock Drill Bit
US$
512.00
-
2,212.00
1 Piece
(MOQ)
9 7/8'' TCI Insert Tricone Rotary Drill Bit for Hard Rock
US$
500.00
-
900.00
1 Piece
(MOQ)
IADC537 Oil Well 9 1/2" Tricone Core Drilling Bits
US$
1,920.00
1 Piece
(MOQ)
1/4
Zhu Zhou Evergreen Hardmetal Tools Co., Ltd.
Send Inquiry
Mining Parts Carbide Tips Inserts Tungsten Carbide Button Bits Rock Drilling Tools
US$
5.00
10 Pieces
(MOQ)
Durable Cemented Carbide Button Tips/ Carbide Button Insert / Carbide Coal Mine Rock Drill Bit with Extra Coarse Grain Size D14.2 D16.2mm
US$
40.00
1 kg
(MOQ)
DTH Tungsten Carbide Buttons Insert for Mining Drill Bits Mining Tools
US$
48.00
1 kg
(MOQ)
Cemented Carbide Spherical Buttons Bits for DTH, Rock Oil Drilling Tools
US$
47.00
-
52.00
1,000 kg
(MOQ)
1/4
Beijing Jincheng Mining Technology Co., Ltd.
Send Inquiry
Insert Tooth Water Well Drilling Tools TCI Tricone Rock Roller Bits 10''
US$
1.00
1 Piece
(MOQ)
Factory Price TCI Tungsten Carbide Insert Tricone Cone Rock Bits for Water Well Drilling
US$
1.00
1 Piece
(MOQ)
New Design Roller Cone PDC Insert Drill Tricone Drill Bits
US$
100.00
1 Piece
(MOQ)
8-1/2" Tricone Bits/Button Insert Bits /Roller Cone Bits
US$
100.00
-
1,500.00
1 Piece
(MOQ)
1/4
Dezhou Drillstar Co., Ltd
13 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Tricone Drill Bit TCI Tungsten Carbide Insert Roller Cone Bit for Oil Well Hard Rock Drilling
US$
18.00
10 Pieces
(MOQ)
Tungsten Carbide Drill Bits - Heavy-Duty Rock Drilling Inserts
US$
55.00
10 kg
(MOQ)
Standard Factory Oil & Mining Drilling Bits for Water, Oil and Gas Well Drilling and Drilling Machine
US$
10.00
10 Pieces
(MOQ)
Customizable Weldable Carbide Drill Bits for Precision Mining
US$
15.00
10 Pieces
(MOQ)
1/4
Luoyang Shandike Mechanical Equipment Co., Ltd.
Send Inquiry
Mining Machinery Part Rock Drilling Tool Thread Button Bit with Tungsten Carbide Inserts Drill Bits
US$
20.00
-
150.00
1 Piece
(MOQ)
Drilling Tools Oil Drill Bit Price Mining Carbide Insert Well Tricone Bit Drill Bit for Rock Bearing Tungsten Carbide Tricone Rock Drill Bit
US$
900.00
-
1,350.00
2 Pieces
(MOQ)
Air Hammer Drill Tungsten Carbide R32 Rock Drilling Tools Mining Carbide Bits Threaded Button Bits
US$
55.00
-
59.00
5 Pieces
(MOQ)
Drilling Tools T38 T45 T51 Gt60 Oil Drill Bit Price Hole Drilling Jackhammer Tunnel Rock Drill Steel Jack Hammer Tapered Bit
US$
2.00
-
5.00
1 Piece
(MOQ)
1/4
Hongkong Eastlong Technology Co., Limited
Send Inquiry
Tricone Drill Bit TCI Tungsten Carbide Insert Roller Cone Bit for Oil Well Hard Rock Drilling
US$
4.90
-
5.00
100 Pieces
(MOQ)
IADC 537 Rock Drilling Tools Sliding Bearing Insert Tooth Bit Tricone Drill Bit for Water Well or Mining
US$
4.90
-
5.00
100 Pieces
(MOQ)
Roller Cone Drill Bits Three Rotating Cones Tricone Bit with Large and Long Chisel-Shaped Inserts
US$
4.90
-
5.00
10 Pieces
(MOQ)
Drill Bit Hot Cone Bit Tricone TCI Tricone Bit/Roller Cone Bit/Rock Bit for Drilling
US$
4.90
-
5.00
100 Pieces
(MOQ)
1/4
Maxdrill Rock Tools Co., Ltd.
22 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Maxdrill R32 48mm Mining Rock Drill Bits Thread Button Bit with Tungsten Carbide Inserts Drill Bits for Mining
US$
32.00
-
35.00
10 Pieces
(MOQ)
36mm Diameter 11° Taper Button Bit Tungsten Carbide Inserts
US$
10.80
-
14.20
25 Pieces
(MOQ)
Maxdrill 38mm 12 Degree 7 Button Insert Taper Button Bit for Steel Shank
US$
12.40
-
15.50
50 Pieces
(MOQ)
Maxdrill China Best Price T38 64mm Carbide Inserts Cross Bit
US$
70.00
-
75.00
20 Pieces
(MOQ)
1/4
HEBEI XINHUAFA PETROLEUM MACHINERY CO., LTD.
20 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Factory Directly Provide Hard Rock Mining with Carbide Insert TCI Rotary Roller API 8 1/2" TCI Tricone Bit Three Cone Bit for Hard Rock Drilling Drill Bits
US$
100.00
-
3,000.00
3 Pieces
(MOQ)
API 149mm-171mm Tri-Cone Drill Bit/Rock Drill Bit
US$
100.00
-
3,000.00
3 Pieces
(MOQ)
API Oil Drilling Rock Bits Tricone Drill Bits PDC Bits for Well Drilling
US$
100.00
-
3,000.00
3 Pieces
(MOQ)
API 9 1/2" 5 Blades PDC Bit for Rock Drilling
US$
100.00
-
3,000.00
3 Pieces
(MOQ)
1/4
Nanchang Bestway Cemented Carbide Co., Ltd.
12 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Carbide Inserts for Roller Rock Bits
US$
47.00
-
52.00
1 kg
(MOQ)
Tungsten Carbide Inserts for Hammer Bits
US$
47.00
-
52.00
1 kg
(MOQ)
Tungsten Carbide Inserts (TCI) Bits
US$
47.00
-
52.00
1 kg
(MOQ)
Construction Carbide Tools Button Bits in Different Types
US$
47.00
-
52.00
1 kg
(MOQ)
1/4
Quzhou Refine Machinery Equipment Co., Ltd.
10 yrs
·
Trading Company
Send Inquiry
45mm Cemented Carbide Insert Chisel Horse Bit For Rock Drilling
US$
4.45
-
5.25
500 Pieces
(MOQ)
40mm Top End Tapered 7 Button Insert Drill Bit for Quarry
US$
7.33
-
8.33
100 Pieces
(MOQ)
38mm 12degree 8 buttons Insert High End Bore Bit For Quarry
US$
7.30
-
8.30
100 Pieces
(MOQ)
34mm 8 Buttons Insert High Quality Drill bit for Quartz
US$
5.86
-
6.67
100 Pieces
(MOQ)
1/4
Shandong Kat Drilling Tools Co., Ltd.
5.0
Send Inquiry
32mm Rock Drill Bit for Mining with Special Carbide Inserts Ensuring High Impact Resistance
US$
3.80
10 Pieces
(MOQ)
Q7-36mm Rock Drillling Tools Tapered Button Bit for Hex Rod Mining
US$
3.00
-
3.60
10 Pieces
(MOQ)
Q8-34-722-60 Rock Drilling Tools Tapered Button Bit for Indian Granite Mining
US$
3.00
-
3.60
10 Pieces
(MOQ)
7 Buttons Hard Rock Drilling Tools Taper Button Bit for Tapered Rock Drilling
US$
3.00
-
5.50
10 Pieces
(MOQ)
1/4
Zhuzhou Up Cemented Carbide Co., Ltd.
5.0
Send Inquiry
1908 1913 1916 1925 PDC Rock Cutter Insert Gas Water Well Drilling PDC Cutter Bit
US$
10.50
-
13.20
50 Pieces
(MOQ)
for Hard Rock Rotary Mining Well Water Step Drilling Tools 3 or 4 Wings Blades PDC Tungsten Carbide Tooth Drag Bit Matrix Bits
US$
72.00
-
79.00
1 Piece
(MOQ)
Zhuzhou Factory Free Shipping Cost Conical Drill Bit 45mm 7 Buttontapered Rock Drilling Bit Conical Drill Bit
US$
9.80
-
12.50
10 Pieces
(MOQ)
Od19.05*13.2mm Heat-Resistant Polycrystalline Diamond Layer PDC Drill Bits
US$
10.50
-
13.20
50 Pieces
(MOQ)
1/4
Qidong Fengsu Drilling Tools Co., Ltd.
5.0
Send Inquiry
4-1/2inch PDC Insert Cutter Deep Well Mining Rock Drill Bit
US$
121.00
-
138.00
10 pieces
(MOQ)
Fs Factory Wholesale Price 1305 Convex Cutter Diameter Core Drill Bit
US$
18.00
-
20.00
1 Piece
(MOQ)
6 Tooth Diameter 91 mm 1304 PDC Pellet Schist Core Drill Bits
US$
18.00
-
20.00
1 Piece
(MOQ)
Hot Sale Slice PDC Core Bits Standard Steel Body PDC Core Bits
US$
18.00
-
20.00
1 Piece
(MOQ)
1/4
Yanggu Juli Machinery Co., Ltd
6 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Hard Rock Drilling Bits Carbide Insert Button Bit Rock Cutting Bullet
US$
6.80
-
9.80
500 Pieces
(MOQ)
API Three Cones Bit Tungsten Carbide Insert Tricone Bit
Negotiable
1 Piece
(MOQ)
Tungsten Carbide Insert Three Cone Bit TCI Tricone Bits
Negotiable
1 Piece
(MOQ)
R32 Threaded Button Bit 51mm for Drilling Ruilister Yanggu China
Negotiable
5 Pieces
(MOQ)
1/4
Henan XingZhiHua Construction Machinery Co.,Ltd.
5.0
Send Inquiry
Best Quality and Price IADC 537 537g Rock Drilling Insert Tooth Bit Tricone Drill Bit for Well Drilling or Mining
US$
500.00
-
2,000.00
1 Piece
(MOQ)
Hard Rock Metal Sealed 4 Inch Drill Bit Tricone Roller Bit 8 3/4 Rock Bit for Deep Foundation
US$
500.00
-
900.00
1 Piece
(MOQ)
Tricone Roller Bits API Standard 9 7/8 Inch 250.8mm Mining Tricone Drill Bit
US$
500.00
-
900.00
1 Piece
(MOQ)
Factory Price Premium Quality 6 1/2'' IADC537 Tricone Drill Bit for Hard Rock
US$
500.00
-
900.00
1 Piece
(MOQ)
1/4
Shandong RZ Drilling Tools Co.,Ltd.
Send Inquiry
SL07 Trencher Bit with Carbide Inserts for High Duty Rock Trenching
US$
2.60
-
3.30
200 Pieces
(MOQ)
Cemented Drilling Bits with Carbide Bullet Tips 19mm 22mm 25mm
US$
9.90
-
12.90
50 Pieces
(MOQ)
HDD Horizontal Directional Drilling Bits Welding on Teeth & Bits Rt1 Rt2 Dt50 Dt87 for Back Reamer
US$
3.30
-
3.80
100 Pieces
(MOQ)
Supply HDD Drilling Bits for Directional Drilling Machine
US$
4.30
-
4.80
100 Pieces
(MOQ)
1/4
1
10
Hot Products
Water Drilling
Water Well Drilling
Drill Bits
Tungsten Carbide Insert
Tungsten Carbide Drill Bits
Rock Bit
Rock Drill Bit
Tungsten Carbide Insert Bit
Related Manufacturers & Supplier
Steel Tooth Bits Factories
Rock Button Bit Factories
Diamond Rock Bit Factories
Dth Rock Bit Factories
Diamond Rock Drill Bits Manufacturers
Button Rock Drill Bit Manufacturers
Tungsten Carbide Mining Bits Manufacturers
Oil Drilling Rock Bits Manufacturers