Home
Supplier Discovery
Electrical & Electronics
FPC
Digital Pcb Factories & Companies
Filter
Category
Consumer Electronics
Electrical & Electronics
Manufacturing & Processing Machinery
Security & Protection
Auto, Motorcycle Parts & Accessories
More
Management Certification
ISO9001:2008
Others
ISO9001:2015
ISO14001:2015
ISO45001:2016
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
More
Province & Region
Anhui
Beijing
Chongqing
Fujian
Gansu
More
about digital pcb
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
digital pcb
2,000+ factories verified
JS Technology Co., Ltd.
4.0
Send Inquiry
Pcbasic Cheap Design SMD Electric Digital Control Universal PCB for Microwave Oven
US$
0.90
-
2.60
1 Piece
(MOQ)
Pcbasic Fr4 Gerber OEM Digital Finger Print Safe PCB Design and Development for Smart Lock
US$
0.90
-
2.60
1 Piece
(MOQ)
Pcbasic Custom Made Control System Electronic Toy Gift 37 Key Digital Piano PCB Board
US$
0.90
-
2.60
1 Piece
(MOQ)
Pcbasic PCB-Layout-Design-Services Waterproof Alarm PCB Digital Clock Printed Circuit Board
US$
0.90
-
2.60
1 Piece
(MOQ)
1/4
Finest Printed Circuit Board Ltd.
23 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Miniaturized Electronics High-Tech Circuit Board High-Speed Digital Custom Multilayer PCB
US$
2.00
-
5.00
1 Piece
(MOQ)
Fr4 LED Strip Light UL Rigid Flex Flexible Double Sided Single PCB Board Assembly in PCBA Digital FPC Manufacturer
US$
3.50
-
5.00
1 Piece
(MOQ)
Custom Electronics Flexible PCB Touch Screen FPC Board Digital FPC Board
US$
0.50
-
2.00
1 Piece
(MOQ)
Dongguan Digital Timer Electric Fence Driver Flashlight Drone PCB PCBA Circuit Board with Remote
US$
2.00
-
5.00
1 Piece
(MOQ)
1/4
Shenzhen Jingxin Electronic Technology Co., Ltd.
20 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Digital Clock Module Manufacture LED LCD Real Time Mirror Clock PCB in Good Quality
US$
0.25
-
1.00
1 Piece
(MOQ)
Designer DIY Simple Electrical Fpga Series Circuit PCB Soldering Digital Zero Vero Board Breadboard Basic Layout Bread Board
US$
0.25
-
1.00
1 Piece
(MOQ)
OEM PCB&PCBA Factory Supply Customization Service PCB for Digital Photo Frames
US$
4.00
-
5.00
1 Piece
(MOQ)
Smart Digital Healthcare PCBA High Frequency Board Multilayer PCB Assembly Supply
US$
0.05
-
16.00
1 Piece
(MOQ)
1/4
Abis Circuits Co., Ltd.
Send Inquiry
Gold Finger Enig Board PCB for Digital Imaging Systems
US$
0.01
-
3.00
1 Piece
(MOQ)
Shenzhen Abis Multilayer PCB Rigid Circuit Board PCB Used for Digital Products
US$
0.10
-
10.00
1 pcs
(MOQ)
Digital Products Application Custom Design RoHS Rigid Flex PCB
US$
0.10
-
80.00
1 Piece
(MOQ)
Machine Power Tool Digital Caliper Fr-4 Cem1 PCB Board Manufacturer
US$
0.01
-
150.00
1 Piece
(MOQ)
1/4
Shen Zhen Saqcn Innovation Technology Co., Ltd.
20 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Smart Digital Display Switching Power Supply Control Board 12V 10ah Power Supply PCB with Voltage/Current Adjustment Knobs
US$
3.90
-
4.30
100 Pieces
(MOQ)
ODM Digital Control Switching Power Supply PCB Assembly 0-30V Adjustable Output with Short Circuit Protection for LED Converter
US$
26.20
-
27.00
100 Pieces
(MOQ)
Electronics Power Supply Board PCB Assembled for Digital Signage PCBA 25W 15W 10W 12V 5vsb 24V 1A 2A
US$
0.89
-
1.99
100 Pieces
(MOQ)
Smart Digital Control Power Supply PCB Assembly with IoT/Bluetooth Interface Programmable Voltage/Current for Smart Home/Industry 4.0
US$
2.00
-
2.50
100 Pieces
(MOQ)
1/4
Guangzhou Asl Electronic Technology Co., Ltd.
Send Inquiry
Advanced 1.5kw 2kw 3kw DC Inverter Integrated Swimming Pool Heat Pump Circuit PCB for System Control and Inverter Compressor Drive with Digital Thermostat
US$
90.00
-
160.00
1 Set
(MOQ)
R290 Leak & Explosion Proof 1.5kw 1.8kw 2.8kw 3kw Single Phase DC Inverter Dehumidifier Compressor Driver PCB with Main Board and Digital Thermostat
US$
250.00
-
600.00
1 Piece
(MOQ)
Customized 1.5kw 2kw 3kw DC Inverter Integrated Swimming Pool Heat Pump PCB with Digital Thermostat
US$
90.00
-
160.00
1 Set
(MOQ)
China Manufacturer Customized 1.5kw -3kw DC Inverter Swimming Pool Heat Pump Integrated Control Board PCB with Digital Thermostat
US$
90.00
-
160.00
1 Set
(MOQ)
1/4
Shenzhen Okey Circuit Co., Ltd.
Send Inquiry
Ceiling Fan AC DC PCB Kit PCB Pressure Sensor BLDC Fan Massage Gun EV Charger 300W Inverter Toys Kids DMX Decoder Weighing Scale Digital Other PCB
US$
0.01
-
0.41
1 Piece
(MOQ)
Digital Instrument Output Power Supply Modules Bo512s 1W Fulhan Board Manufacturer Board PCB
US$
0.01
-
0.03
1 Piece
(MOQ)
AC3 Dts Digital Audio Decoder 5.1 PCB Board PCB Development Mixer Various Specifications PCB Termin Multilayer PCB
US$
0.01
-
0.41
1 Piece
(MOQ)
High Quality Digital Camera PCB PCBA Factory
US$
1.20
-
3.00
1 Piece
(MOQ)
1/4
Ucreate PCB Co., Ltd.
Send Inquiry
Electronic PCB PCBA Wholesale Board Metal Copper Double Sided PCB Board Digital Display Circuit Board
US$
0.99
-
1.89
1 Piece
(MOQ)
2 Layer Flexible Multilayer PCB Assembly for Digital LED
US$
0.60
-
1.00
1 PCS
(MOQ)
Shenzhen Experience OEM Customized Digital TV Antenna Indoor PCBA Company Communication PCBA PCB Assembly
US$
1.20
-
1.80
1 Piece
(MOQ)
High Performance Digital Mipi Camera Edp Circuit Boards Support NFC Card Reader Qr GPS G-Sensor Type-C 4G SIM Card PCBA PCB
US$
0.63
-
1.06
1 Piece
(MOQ)
1/4
Shenzhen Xinjiaye Electronics Technology Co., Ltd.
Send Inquiry
Digital Camera Testing Board /Rigid Electronic Digital PCB Board
US$
0.10
-
10.00
1 Piece
(MOQ)
Industry/Autoamtion/Electronics/Medical/Digital Circuit Control PCB Design
US$
0.10
1 Piece
(MOQ)
Assembly Flexible PCB with SMT/BGA / DIP PCB
US$
0.16
1 Piece
(MOQ)
China Professional Flexible PCB/PCBA Manufacturer
US$
0.10
1 Piece
(MOQ)
1/4
Shenzhen Bicheng Electronic Technology Co., Ltd
Send Inquiry
Rogers Rt/Duroid 5870 62mil 1.575mm High Frequency PCB for Point to Point Digital Radio Antennas
US$
0.99
1 Piece
(MOQ)
Rogers RO4003c Lopro PCB Power Amplifier Board of Digital PCB Manufacturing
US$
0.90
-
99.99
1 PCS
(MOQ)
Taconic Tlf-35 Digital Radio Receiver Designer & Control Panel Motherboard PCB Wholesale
US$
0.99
-
99.00
1 Piece
(MOQ)
Rt/Duroid 5870 High-Frequency PCB - 10mil (0.254mm) Double-Layer Board with Immersion Silver Finish for Point to Point Digital Radio Antennas
US$
0.99
-
99.00
1 Piece
(MOQ)
1/4
Shenzhen Chengruyuan Technology Co., Ltd.
5.0
Send Inquiry
High Quality Spare Parts Power Board PCB, Digital Display CPU, Can Be Customized and Copied
US$
0.10
-
100.00
1 Piece
(MOQ)
OEM High-Speed Digital IoT WiFi PCB Board One-Stop Turnkey Electronics PCBA Assembly & Stencil Design Service
US$
0.10
-
5.00
1 Piece
(MOQ)
Flexible Printed Circuit Board Flex LED Film Soft PCB Flex PCB FPC
US$
2.89
1 Piece
(MOQ)
One-Stop Service Shenzhen PCB Customized Flex Board PCB FPC Circuit Boards PCB Manufacturing
US$
0.10
-
0.50
1 Piece
(MOQ)
1/4
Dongguan Sunhyor Audio Technology Co., Ltd
5.0
Send Inquiry
Good Performance High Power Digital Power Amplifier PCB Modules with OEM and ODM
US$
120.00
-
760.00
5 Pieces
(MOQ)
China Manufacturer Supply Analog and Digital Power Amplifier PCB Modules Audio Accessories
US$
120.00
-
760.00
5 Pieces
(MOQ)
Sample Customization Analog and Digital Power Amplifier PCB Module ODM OEM
US$
120.00
-
760.00
5 Pieces
(MOQ)
Good Performance 1500W Audio Digital Amplifier Module PCB Assembly
US$
120.00
-
760.00
5 Pieces
(MOQ)
1/4
Shenzhen Core Hecheng Electronic Technology Co., Ltd.
5.0
Send Inquiry
Configuration Control Electronic Shielding Thermal Cycling Optical Receiver Data Transmission Digital Signal Processing Next-Generation Telecommunication PCB
US$
0.01
-
10.00
1 Piece
(MOQ)
Application-Specific Advanced Thermal Conformal Coating Low-Cost Single-Sided Digital Circuit Composite Aerospace Graphene-Based PCB Integration Assembly
US$
0.01
-
10.00
1 Piece
(MOQ)
Durable High-End Fabrication Gold Finger Raspberry Pi5 PCB USB Digital Voice Recorder VDSL Modem Board 1-50 Layers PCBA Factory
US$
0.01
1 Piece
(MOQ)
Satellite Communications Telemedicine Intelligent Appliances PCBA Fast-Paced Digital Infrastructure Sensors Data-Driven Machinery PCB Assembly Hosting
US$
0.01
-
10.00
1 Piece
(MOQ)
1/4
Qingdao Shanyo Precision Electronic Technology Co., Ltd.
13 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Standardized Quality Control Electronic Manufacturer High-Temperature Industrial Control Circuit PCB for Touch Screen Digital Product
US$
0.85
-
4.25
1 Piece
(MOQ)
Standardized Quality Control Manufacturer High-Temperature Industrial Control Circuit PCB for Touch Screen Digital Product
US$
0.50
-
4.50
1 Piece
(MOQ)
Shanyo Customized Tactile Waterproof Flexible PCB for Drones Application
US$
0.20
-
5.00
1 Piece
(MOQ)
Qingdao Shanyo Tactile Contact Waterproof Flexible PCB Printed Circuits Boards
US$
0.50
-
5.50
1 Piece
(MOQ)
1/4
Granbo Technology Industrial Shenzhen Co., Ltd.
13 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Digital Function 60W Ultrasonic Cleaner for PCB Parts with 40kHz Frequency
US$
10.00
-
20.00
1 units
(MOQ)
180W for Cleaner Equipment for Watch Parts Cleaning with Digital Function Ultrasonic PCB Board
US$
15.00
-
25.00
1 units
(MOQ)
120W Ultrasonic Cleaning Parts for PCB Boards and Equipment with 40kHz Frequency
US$
10.00
-
20.00
1 units
(MOQ)
Ultrasonic Cavitation Machine Digital Timer Cleaning for Glass PCB Jewelry Eyeglass Dental Ultrasonic Cleaner
US$
180.00
1 unit
(MOQ)
1/4
Shenzhen Smart Electronics Co., Ltd
13 yrs
Send Inquiry
Digital PCB Weighing Counting Scale LED/LCD Motherboard Electronic Circuit Board Flexible Weighing Scale PCB Circuit Boards
US$
1.00
-
5.00
5 pieces
(MOQ)
Smart Electronics FPC Prototype Processing Electronic FPC Board Maker Custom Flex PCB
US$
0.20
-
1.20
5 pieces
(MOQ)
Smart Electronics Immersion Gold OEM Flexible PCB Board Custom Flex PCB
US$
0.40
-
1.20
5 pieces
(MOQ)
Smart Electronics High Quality Flex PCB Assembly FPC FPCB Fabrication Flexible PCB Manufacturer
US$
0.50
-
5.00
5 pieces
(MOQ)
1/4
Shenzhen Mzh Pcb., Co Ltd
Send Inquiry
High-Quality China Fr-4 Base Material Digital Processing PCB Board Manufacturing for Remote Control Components
US$
0.50
-
5.00
1 Piece
(MOQ)
High-Quality China 0.2-6mm Board Thickness Digital Processing PCB Board Manufacturing
US$
0.55
-
5.50
1 Piece
(MOQ)
Professional Supplier Custom Board Thickness Digital Processing PCB Board Manufacturing for Solar Inverters
US$
0.55
-
5.50
1 Piece
(MOQ)
Hot Sale Circuit Board Digital Processing PCB Board for Remote Control Components
US$
0.50
-
5.00
1 Piece
(MOQ)
1/4
Hangzhou FrankEver Imp. & Exp. Co., Ltd.
5.0
Send Inquiry
Folding Digital Display Small Fan PCB Board PCBA Circuit Board Solution Development Production Assembly Supplier
US$
0.02
20,000 pieces
(MOQ)
Digital Alarm Clock Circuit PCBA, Circuit PCBA, Clock Timer Electronic PCB Assembly
US$
0.20
-
0.50
10,000 pieces
(MOQ)
Air Fryer Digital Display Thermostat Module Circuit Board PCBA Motherboard Program Development Miniature Temperature Control PCB Board
US$
0.50
-
20.00
10,000 Pieces
(MOQ)
Universal Digital Display Type-C Small Fan Circuit Board Competitive Price PCB Board Manufacturer
US$
0.02
20,000 pieces
(MOQ)
1/4
Hangzhou Lanben Trade Co., Ltd.
7 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
20kHz Ultrasonic PCB Board of Digital Ultrasonic Generator Driver Circuit Board
US$
350.00
-
400.00
1 Piece
(MOQ)
20kHz 2000W Digital Generator Driver Ultrasonic PCB Circuit Board
US$
250.00
-
280.00
1 Piece
(MOQ)
20kHz Digital Generator Driver Ultrasonic PCB Circuit Board
US$
250.00
-
280.00
1 Piece
(MOQ)
Ultrasonic PCB Board of Digital Ultrasonic Generator Driver Circuit Board
US$
250.00
-
280.00
1 Piece
(MOQ)
1/4
Shenzhen STHL Technology Co., Ltd.
11 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Smart Touch Switch PCB Digital TV Set-Top Box DC Inverter Air Humidifier
US$
1.00
-
20.00
1 pcs
(MOQ)
Digital Camera Circuit Boards LCD Monitor PCB Board Toshiba Circuit Board
US$
1.00
-
20.00
1 pcs
(MOQ)
Digital Camera PCBA LCD Monitor PCBA Board for Electronic Product in China
US$
0.50
-
1.00
1 pcs
(MOQ)
Gemini Lake Digital Signage PCBA
US$
1.00
-
22.00
1 pcs
(MOQ)
1/4
Wuhan Ruich Greatup Industry Limited
4 yrs
·
Trading Company
Send Inquiry
CCC Approved Electronic Digital Display Cooker PCBA Range Hood Switch PCB Control
US$
5.00
-
6.00
1,000 Pieces
(MOQ)
Electronic Digital Display Switch Home Appliance Oven Control PCB Circuit Board
US$
5.00
-
6.00
1,000 Pieces
(MOQ)
Home Range Hood Integrated Accessories PCBA PCB Circuit Board with ISO
US$
5.00
-
6.00
1,000 Pieces
(MOQ)
Customized Electronic Touch Panel Kitchen PCBA Range Hood Switch PCB Control
US$
5.00
-
6.00
1,000 Pieces
(MOQ)
1/4
Guangdong Chico Electronic Inc.
23 yrs
·
4.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Digital PCB for Water Heater All in on Swimming Pool Heatpump Controller
US$
27.00
-
36.00
1 Set
(MOQ)
Digital Processor Controller Heat Pump PCB Control Board Heat Pump Controller
US$
27.00
-
36.00
1 Set
(MOQ)
Air Source Swimming Pool Heat Pump Tuya PCB Board Controller
US$
36.00
-
48.00
1 Set
(MOQ)
Universal Tuya WiFi Swimming Pool Heat Pump Controller Board PCBA
US$
36.00
-
48.00
1 Set
(MOQ)
1/4
Jian Unice Pcb Technique Co., Ltd
11 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
PCB Board 1.6mm Fr4 4 Layers HASL Lead Free/Immersion Gold Printed Ciruit Board for Digital Devices/Consumer Electronics RoHS Certification
US$
0.28
2 Pieces
(MOQ)
Unice 17 Years Manufacturing Experience Rigid Circuit Board PCB
US$
0.10
-
2.90
1 Piece
(MOQ)
Rigid PCB Board Manufacturers Design PCB with Gold Finger HASL Lf
US$
0.08
2 Pieces
(MOQ)
Multilayer Fr-4 Electronics PCB
US$
0.10
100 Pieces
(MOQ)
1/4
Hangzhou Guozhen Wanxin Coating Equipments Manufacturing Co., Ltd.
20 yrs
·
4.3
·
Manufacturer/Factory & Trading Company
Send Inquiry
Dual 101 Electric Cards PCB Large Digital Display for Powder Coat Machine
Negotiable
1 Piece
(MOQ)
Red PCB 108 2 Digital Circuit Board System for Powder Coat Gun
US$
55.00
-
80.00
1 Piece
(MOQ)
Wx-CB101-L Electric Cards PCB for Powder Coat Machine
Negotiable
1 Piece
(MOQ)
Xt-F04 Manual Electrostatic Flocking Machine
US$
9,999.00
1 Set
(MOQ)
1/4
Weifang Litone Machinery Co., Ltd.
5.0
Send Inquiry
Circuit Board / PCB for Powder Coating Machine - Digital Display
US$
20.00
-
37.00
1 Set
(MOQ)
PCB Ddcc for Powder Coating Equipment/Machine
US$
38.00
-
42.00
1 Set
(MOQ)
Kci 24V Powder Coating PCB Electrostatic Motherboard Circuit Board
US$
35.00
-
95.00
1 Set
(MOQ)
Multifunctional Powder Coating Line for Aluminum Profile Spraying
US$
3,500.00
-
5,500.00
1 Set
(MOQ)
1/4
Sichuan Concentric Circle Wisdom Technology Co., Ltd.
7 yrs
·
5.0
·
Manufacturer/Factory
Send Inquiry
High-Quality OEM Inverter Board with Digital Display PCB
US$
0.10
-
5.00
1 pieces
(MOQ)
Tlecuonccomponens, Accessones &1eiecomnumcauons OEM Digital Industrial Display Instrument PCBA Type Scheme Design and Development for Effective Communication
US$
0.10
-
5.00
1 pieces
(MOQ)
7510t Transmitter 2.4GHz Tour Guide System Microphone Transmitter for Museums, Tourist Groups
US$
28.50
-
30.00
1 Piece
(MOQ)
Mini Wireless Audio Tour Guide System 7701r Receiver Museum Bt for Tourist Travel Museums Galleries/Exhibition Centers Industrial Visits
US$
40.00
-
60.00
1 Piece
(MOQ)
1/4
Weifang Galin Powder Coating Equipment Co., Ltd.
13 yrs
·
5.0
·
Trading Company
Send Inquiry
Galin DC01 Digital Display PCB for Electrostatic Powder Coating Spray Gun Machine
US$
35.00
-
45.00
1 Piece
(MOQ)
Cg06 Gun Control Unit Canbus PCB for Manual Powder Coating 1001274 (Non OEM)
US$
150.00
-
160.00
1 Piece
(MOQ)
Galin Phirst / Gun Control Cabinet with Advanced Digital PLC for Automatic Electrostatic Powder Coating Line and Mass Production / Metal Surface Treatment
US$
1,350.00
-
1,450.00
1 Piece
(MOQ)
Galin Ddcc Digital Display PCB for Electrostatic Powder Coating Spray Gun Machine
US$
35.00
-
45.00
1 Piece
(MOQ)
1/4
Jilin Lu'an Technology Co., Ltd.
14 yrs
·
5.0
Send Inquiry
Noritsu Qss 2901 J390611-00 Digital Minilab Image Correction PCB Noritsu Qss 2901 Image Correction PCB J390611 Mini Lab Part
US$
435.00
1 Piece
(MOQ)
Mimaki Jv300/Jv150 Cart Io PCB Assy (E107936) Mimaki Jv150, Jv300, Cjv150 & Cjv300 Cart Io PCB Assy - E107936
US$
285.00
1 Piece
(MOQ)
Original Mimaki Ts500-1800 Jfx200hdc PCB Assy - E107415-01/E109890-a M026406 Hdc PCB Assy Previously Mimaki E107415, E109890, M020282 Hdc PCB Assembly
US$
685.00
1 Piece
(MOQ)
Original Epson Lq-2190 Main Board/Logic PCB for Epson Lq2190 Lq-2190 DOT-Matrix Printer Motherboard Lq1900K2h Lq1900kiih Mainboard Board Assy
US$
358.00
1 Piece
(MOQ)
1/4
Flex Plus(Xiamen) Co., Ltd
Send Inquiry
Customized Flex PCB for Pdlc with Large Area Immersion Gold
US$
0.20
-
10.00
1 Piece
(MOQ)
High Quality Rigid Flex PCB Circuit Board High Tech FPC Board Manufacturer
US$
0.08
-
10.00
1 Piece
(MOQ)
Customized Automotive Lighting FPC Board Flex PCB with IATF16949 Certificate
US$
1.00
-
10.00
1 Piece
(MOQ)
Automotive Lighting Customized Flexible PCB Manufactured by Xiamen Flex Plus
US$
1.00
-
10.00
1 Piece
(MOQ)
1/4
Shenzhen Li-ion Battery Bodyguard Technology Co., Limited
13 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Fr-4 Factory BMS 3s 15A PCM/ 11.1V Li-ion BMS PCB
US$
1.00
-
2.00
10 Pieces
(MOQ)
Red Battery Management system 8s 5A/7A LiFePO4 PCB
US$
2.83
-
4.62
100 Pieces
(MOQ)
Lithium Ion /Lipo/LiFePO4 Battery PCB 3s10A 12A
US$
2.08
-
3.68
10 Pieces
(MOQ)
Fr-4 RoHS PCB 3s4a 8A for Lithium Ion /LiFePO4 Battery PCM
US$
1.32
-
1.76
10 Pieces
(MOQ)
1/4
1
73
Hot Products
Digital Temperature Controller
Digital Power
Pcb Products
Digital Control System
Digital Control
Digital Light
Digital Controller
Digital Audio
Related Manufacturers & Supplier
Digital Single Factories
Cable Digital Factories
Digital Power Supply Factories
Digital Wire Factories
Pcb Manufacturers
Digital Output Manufacturers
Digital Switch Manufacturers
Digital Voltage Manufacturers