Home
Supplier Discovery
Electrical & Electronics
Capacitor
High Reliability Factories & Companies
Filter
Category
Consumer Electronics
Construction & Decoration
Electrical & Electronics
Manufacturing & Processing Machinery
Metallurgy, Mineral & Energy
More
Management Certification
ISO9001:2008
ISO14001:2004
OHSAS18001:2007
Others
ISO9001:2015
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 high reliability
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
high reliability
10,000+ factories verified
Jiangsu Pengtai Electric Co., Ltd
21 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
50 kVA Low Voltage High Efficiency Dry Type Transformer for Power Reliability
US$
800.00
-
1,900.00
1 Set
(MOQ)
Low Impedance Design High Reliability Mns Indoor Low-Voltage Switchgear
US$
900.00
-
1,200.00
1 Set
(MOQ)
High Reliability Scb18 Series 630 kVA Electrical Power Dry Transformer
US$
1,900.00
-
2,100.00
1 Set
(MOQ)
Energy Saving Scb18 Series Electrical High-Reliability Three Phase Dry Type Transformer
US$
1,900.00
-
2,100.00
1 Set
(MOQ)
1/4
Dongnan Electronics Co., Ltd.
31 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Dongnan PS9 Type White High Reliability Button Switch for Refrigerator and Lighting
US$
0.80
5,000 Pieces
(MOQ)
Dongnan Factory Outlet Competitive Price High Reliability Air-Conditioner Micro Switch
US$
0.30
2,000 Pieces
(MOQ)
Dongnan 5A 125/250VAC Kw4a Micro Switch High Reliability Micro Switch
US$
0.30
5,000 Pieces
(MOQ)
China Factory 2pin 3pin Mini Micro Switch Lever High Reliability Micro Switch
US$
0.30
5,000 Pieces
(MOQ)
1/4
Qingdao Yuanruyuan Electronic Technology Co., Ltd
Manufacturer/Factory & Trading Company
Send Inquiry
Customized Size High Reliability Packaging Machines Industry Wire Harness
US$
0.45
-
0.60
100 Pieces
(MOQ)
High Reliability Home Appliance Wiring Harness for Refrigerator From Chinese Wire Harness Manufacturer
US$
0.30
-
1.00
1 Piece
(MOQ)
Bare Copper High Reliability Water Heater Parts Wiring Harness
US$
0.40
-
1.00
1 Piece
(MOQ)
Hot Sale Copper High Reliability Wiring Harness for Air Conditioners or Washing Machines
US$
0.40
-
1.00
1 Piece
(MOQ)
1/4
Chongqing Lexpower Technology Co., Ltd.
9 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
CE/ISO Certified Gas Generator Set Export Quality High Reliability
US$
13,699.00
1 Piece
(MOQ)
Mute Diesel Generator 200kw 250kw 400kw Stable Voltage High Reliability Ideal for Mining Agriculture Marine Use
US$
5,200.00
-
5,600.00
1 Piece
(MOQ)
54kVA 84kVA 114kVA 134kVA Open Type Generator - Stable Voltage High Reliability Perfect for Warehouses Small Businesses Emergency Use
US$
5,800.00
-
6,000.00
1 Piece
(MOQ)
190kVA 260kw 350kw Silent Diesel Generator High Reliability Stable Performance Suitable for Airports Train Stations Warehouses Industrial Plants
US$
6,200.00
-
6,600.00
1 Piece
(MOQ)
1/4
Jining Jiaqing Special Vehicle (Group) Co., Ltd.
Send Inquiry
Knuckle Boom Crane 12 Ton Small Truck Crane Telescopic Straight Boom Crane Construction Truck Crane Stable Quality and High Reliability
US$
13,000.00
-
27,000.00
1 Piece
(MOQ)
China Manufacturer Direct Sales 16 Ton 8X4 Hydraulic Remote Control Telescopic Boom Crane Truck Stable Quality High Reliability Fast Delivery
US$
48,000.00
-
55,000.00
1 Piece
(MOQ)
HOWO 12 Ton Remote Control Truck with Crane Hydraulic Mechanical Telescopic Straight Arm 6X4 Truck Crane with Stable Quality and High Reliability
US$
9,800.00
-
13,000.00
1 Piece
(MOQ)
Wholesale Sinotruk HOWO Truck 16 Ton China Hydraulic Telescopic Boom Crane with Remote Control Device Stable Quality and High Reliability
US$
13,000.00
-
18,000.00
1 Piece
(MOQ)
1/4
Taizhou Haitian Electric Manufacture Co., Ltd.
26 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High-Reliability Marine Propulsion Autotransformer Step up Transformer for Diesel-Electric Ships
US$
2,888.00
-
20,000.00
1 Set
(MOQ)
Small Marine Dry-Type Transformer with High Reliability Performance
US$
1,500.00
-
20,000.00
1 Set
(MOQ)
High Reliability Oil Immersed Electrical Transformer for Utility Power Stations
US$
10,000.00
-
80,000.00
1 Set
(MOQ)
20kv 2000kVA on-Load Tap-Changing Distribution Transformer with High Reliability
US$
500.00
-
2,000.00
1 Set
(MOQ)
1/4
Kailong High-Technology Co., Ltd.
5.0
Send Inquiry
Quality Level Sensor/Euo VI Urea Quality Level Sensor High Precision, Good Reliability, High Defrost Efficiency with IP67 Level of Ingress Protection
Negotiable
1 Piece
(MOQ)
Hot Selling Urea Nozzle Def Nozzle Truck Parts Aluminum, Copper, Iron, Alloy, Plastic, Inox Steel Urea Nozzle New Urea Injector Engine Parts DC 12V/24V
Negotiable
1 Piece
(MOQ)
High Precision, Good Reliability Quality Level Sensor Engine Parts Universal Diesel Engine 250kbps (Can Be Customized) Truck Adblue Urea Level Sensor OEM
Negotiable
1 Piece
(MOQ)
High Quality Wholesale Cheap Air-Assisted Urea Nozzle Injection Nozzle for SCR System for SAE
Negotiable
1 Piece
(MOQ)
1/4
Tongling Leachan Intelligent Equipment Co., Ltd
22 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Stretch Pallet Wrapping&Strapping All-in-One Machine High Efficiency Versatile Application Stability, Reliability
US$
9,800.00
-
15,900.00
1 Piece
(MOQ)
High Efficiency Electric Anti Collapse Reliability Intelligent Cantilever Wrapping Machine
US$
9,800.00
-
15,900.00
1 Piece
(MOQ)
Reliability Factory Direct Sales Automatic Heat Type High Efficiency Baling Machine
US$
9,800.00
-
15,900.00
1 Piece
(MOQ)
High-Reliability Stretch Full-Automatic Wrapping&Strapping Machine: Upgraded Dustproof & Protection Performance
US$
9,800.00
-
15,900.00
1 Piece
(MOQ)
1/4
Primustron Electronics
Send Inquiry
Bom Analysing High Reliability Solder Industrial Equipment PCB Assembly
US$
5.00
-
500.00
1 Piece
(MOQ)
Compact Large Inventory IC Programming High Reliability Solder PCB Board
US$
5.00
-
500.00
1 Piece
(MOQ)
Signal Stable High Reliability Solder Trackable DIP with CCC Approved
US$
5.00
-
500.00
1 Piece
(MOQ)
Fine Pitch High Reliability Solder Aluminum PCB for Car Window Regulator
US$
5.00
-
500.00
1 Piece
(MOQ)
1/4
Huayao New Materials Technology (Suzhou) Co., Ltd.
Send Inquiry
Custom Metal Machining Service High Reliability Precision Machining Copper Hardware Components
US$
1.00
-
9.00
1,000 Pieces
(MOQ)
Custom CNC Machining Service High Reliability Precision CNC Machining Copper Part
US$
1.00
-
9.00
1,000 Pieces
(MOQ)
OEM Custom Metalworking Services High Reliability Metal Machining Copper Parts
US$
1.00
-
9.00
1,000 Pieces
(MOQ)
Customization CNC Machining Service High Reliability Machining Copper Part
US$
1.00
-
9.00
1,000 Pieces
(MOQ)
1/4
Zhejiang Xiongyuan Electric Co., Ltd
6 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High-Quality High Reliability Vacuum Circuit Breaker for Fault Current Interruption
US$
368.00
1 Piece
(MOQ)
Cost-Effective High Reliability Zn85 Vacuum Circuit Breaker for Generator Protection/Control
US$
2,333.00
1 Piece
(MOQ)
High Cost Performance High Reliability Indoor High Voltage Breaker for ≤12kv Power Systems
US$
2,333.00
1 Piece
(MOQ)
Fine-Quality High Reliability Fixed Type Circuit Breaker for Circuit Protection
US$
495.00
1 Piece
(MOQ)
1/4
Qingdao Junling Transformers Co., Ltd.
15 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
OEM Wholesale Scb10 High-Reliability 10kv 315kVA Three Phase Transformer Dry Type Transformer
US$
1,100.00
-
1,200.00
1 Piece
(MOQ)
High-Reliability Dry Type Transformer with Customizable Voltage Options
US$
1,200.00
-
6,000.00
1 Piece
(MOQ)
High Reliability Transformer for Three Phase Electrical Systems
US$
1,200.00
-
6,000.00
1 Piece
(MOQ)
High Reliability Three Phase Transformer International Standards Power Supply Transformer
US$
1,000.00
-
1,200.00
1 Piece
(MOQ)
1/4
Mega-Tek Instrument (Chengdu) Co., Ltd.
12 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High-Reliability Cast-Aluminum Threaded-Connection Magnetostrictive Liquid Level for Interface Measurement
US$
821.00
-
1,500.00
1 Piece
(MOQ)
High-Reliability Thermocouple M20-Cable-Entry Integrated Multi-Variable Flowmeter for Steam Measurement
US$
3,077.00
-
4,615.00
1 Piece
(MOQ)
High-Reliability Hart-Signal Automatic-Gain Magnetostrictive Liquid Level for Machinery
US$
821.00
-
1,500.00
1 Piece
(MOQ)
High-Reliability Piezomagnetic-Sensor Threaded-Connection Interface Transmitter for Papermaking
US$
821.00
-
1,500.00
1 Piece
(MOQ)
1/4
Xi'an Samsor Electronic Technology Co., Ltd.
11 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High Reliability J30j Series Welding Socket J30j-9zksp Micro-D Rectangular Aviation Connector
US$
11.99
-
14.42
10 Pieces
(MOQ)
High-Reliability Mil-Dtl-83513 J30j-9zkn Plug in-Line Printed Board J30j 9-Pin Connector
US$
9.90
-
14.42
10 Pieces
(MOQ)
High-Reliability J30j-31tjw/Zkw Curve-Needle Plug Socket J30j 31-Cores Micro-D Rectangular Connector
US$
21.99
-
26.37
10 Pieces
(MOQ)
High-Reliability J30j-21zkl Micro-D J30j 21-Pin Socket Rectangular Connector with Cable
US$
19.99
-
27.00
10 Pieces
(MOQ)
1/4
ZHEJIANG CHBEST POWER TECHNOLOGY CO., LTD.
Send Inquiry
Dust Proof High Reliability Regulating Dry Type Transformer with UL Compliant
US$
500.00
-
2,000.00
1 Piece
(MOQ)
Low Loss High Reliability Humidity Resistant Resin Encapsulated Dry Transformer
US$
500.00
-
2,000.00
1 Piece
(MOQ)
High Reliability Dust Proof Regulating High Efficiency Distribution Transformer
US$
500.00
-
2,000.00
1 Piece
(MOQ)
Secure Rigid High Reliability Power Frequency Dry Type Transformer
US$
500.00
-
2,000.00
1 Piece
(MOQ)
1/4
Changzhou CONOVO CNC Tech. Co., Ltd.
12 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High Reliability Five-Axis High Precision Laser Microjet Cutting Machine for Composite Materials
US$
10,000.00
-
30,000.00
1 Piece
(MOQ)
OEM Custom High Reliability High Precision Integrated CNC Fiber Laser Cutting Machine for Electronic Components
US$
10,000.00
-
20,000.00
1 Piece
(MOQ)
Industrial-Grade High Reliability Precision Three-Axis Industrial CNC Water Guided Laser Cutting Machine for Composite Materials
US$
10,000.00
-
30,000.00
1 Piece
(MOQ)
Custom High Reliability High Precision Metal CNC Fiber Automatic Laser Cutting Machine for Automotive Industry
US$
10,000.00
-
20,000.00
1 Piece
(MOQ)
1/4
Ningbo Kara Electronic Co., Ltd.
Send Inquiry
High Reliability Long-Lasting Machine Knob Rotary Switch for Stage Lighting Control
US$
1.50
-
2.50
1,000 Pieces
(MOQ)
High Reliability Easy Assembly Kr2-12-201f3 Universal Rocker Switch for Induction Cookers
US$
0.59
-
0.65
1 Piece
(MOQ)
High Reliability Easy Assembly Multiple-Positions Waterproof Rotary Switch for Residential
US$
1.50
-
2.50
1,000 Pieces
(MOQ)
High Reliability Space-Saving Customizable Knop Rotary Switch for Temperature Control
US$
1.50
-
2.50
1,000 Pieces
(MOQ)
1/4
Shenzhen Xinqifeng Technology Co., Ltd.
16 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
200*200*60mm High Airflow Consistent Performance Reliability AC Cooling Fan
US$
15.00
-
23.00
100 Pieces
(MOQ)
Reliability Factory Price Speed Control High-Performance DC Cooling Fan
US$
1.00
-
5.00
100 Pieces
(MOQ)
High-Performance Durable Flame-Retardant Reliability 5000rpm DC Blower Fan
US$
1.00
-
5.00
100 Pieces
(MOQ)
Over-Current Protection Reliability High Pressure DC Axial Fan
US$
1.00
-
5.00
100 Pieces
(MOQ)
1/4
Dongguan Mingdong Technology Co., Ltd.
2 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High Reliability 100W 100-500MHz RF Power Amplifier Module for Radio Communication, Broadcasting & Repeater Systems
US$
2,360.00
-
2,600.00
1 Set
(MOQ)
High Reliability Cellular Amplifier Module PA Module Signal Booster for Communication Systems
US$
1,400.00
-
1,800.00
1 Set
(MOQ)
High Reliability 50W RF Power Amplifier Module 4-5GHz for Signal Blocker System
US$
1,400.00
-
1,800.00
1 Set
(MOQ)
High Reliability 4-5GHz 50W RF Power Amplifier Module for Laboratory Test System
US$
1,400.00
-
1,800.00
1 Set
(MOQ)
1/4
Shandong Shengshida Pipeline Co., Ltd.
Send Inquiry
High Reliability Water Transmission Pipeline for Engineering Use Using Polyethylene Gas Tube
US$
0.30
1,000 Meters
(MOQ)
High Reliability Water Supply Line for Utility and Industrial Applications Using Polyethylene Gas Tube
US$
0.30
1,000 Meters
(MOQ)
High Reliability Composite Pipe for Urban Water Network Construction PE Steel Skeleton Pipe
US$
0.35
1,000 Meters
(MOQ)
High Reliability Water Supply Pipe for Utility and Industrial Use Featuring Polyethylene Gas Tube
US$
0.30
1,000 Meters
(MOQ)
1/4
FUJIAN JIAGE POWER TECH CO., LTD.
9 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
12V 100AH GF Series Telecom Power Storage Battery, Maintenance-Free, High Reliability
US$
1.00
-
200.00
50 Pieces
(MOQ)
Maintenance-Free 12V 75AH Front Terminal VRLA Battery High Reliability for Critical Telecom Applications
US$
45.00
-
1,200.00
80 Pieces
(MOQ)
High-Reliability 2V500AH VRLA Battery GEM GL Series - Low Internal Resistance for Mission-Critical & Industrial Power Reserve
US$
1.00
-
200.00
50 Pieces
(MOQ)
2V 150Ah Stationary VRLA Battery, Long Life & High Reliability for Critical UPS Applications
US$
1.00
-
200.00
50 Pieces
(MOQ)
1/4
Shandong Chengzhou Intelligent Equipment Co., Ltd.
9 yrs
·
Manufacturer/Factory
Send Inquiry
High Reliability Spot Welding Machine Spot Welder Automatic Nuts Feeding Resistance Spot Welding Machine for Composites Metal Hardware
US$
1,680.50
-
4,500.70
1 Piece
(MOQ)
High Reliability Spot Welding Machine Spot Welder Automatic Nuts Feeding Resistance Spot Welding Machine for Die Steel/Composites Metal Hardware
US$
1,680.50
-
4,500.70
1 Piece
(MOQ)
High Reliability Spot Welding Machine Spot Welder Automatic Nuts Feeding Resistance Spot Welding Machine for Die Steel
US$
1,680.50
-
4,500.70
1 Piece
(MOQ)
High Reliability Spot Welder Attachment Automatic Nuts Feeding Resistance Spot Welding Machine for Carbon Steel/Aluminum Hexagonal Nuts
US$
1,680.50
-
4,500.70
1 Piece
(MOQ)
1/4
Shandong Kaichuan Electric Power Equipment Co., LTD
13 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High-Quality, High-Reliability Magnetic Starter Contactor, Current 3A-800A
US$
3.50
-
141.47
1 tower
(MOQ)
High Reliability Frame Withdrawable Circuit Breaker
US$
586.00
-
1,810.00
1 tower
(MOQ)
High Reliability, High Temperature Resistant Frame Withdrawable Circuit Breaker
US$
586.00
-
1,810.00
1 tower
(MOQ)
High-Quality, High-Reliability Magnetic Starter Contactor, Current 25A
US$
3.50
-
141.47
1 tower
(MOQ)
1/4
Changzhou Huateng Access Floor Co., Ltd.
13 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
High Reliability 600X600mm Building Material Encapsulated Calcium Sulphate Access Panel for Anti-Static Requirement Places
US$
15.00
-
25.00
100 Square Meters
(MOQ)
High Reliability Anti-Static Flooring Calcium Sulphate Access Floor for Banks, Telecommunication Centers
US$
10.00
-
30.00
100 Square Meters
(MOQ)
High Reliability 600X600mm Anti-Static Flooring Encapsulated Calcium Sulphate Access Floor for Factory Clean Room
US$
15.00
-
25.00
100 Square Meters
(MOQ)
High Reliability Furniture Laminate Sheet Anti-Static Access Floor PVC Panel for Computer Room, Data Center
US$
12.00
-
40.00
100 Square Meters
(MOQ)
1/4
Shenzhen BEXKOM Electronics Co., Ltd.
Send Inquiry
Bexkom Factory Supply High Quality Customized High Reliability Metal Shell Humidifier Circular Cable Wire Connector for Medical Equipment
US$
3.50
-
19.90
5 Pieces
(MOQ)
Bexkom Factory Direct Sales New Technology B Series High Quality High Reliability Metal Shell Circular Connector Cable Wire Connector
US$
3.50
-
19.90
5 Pieces
(MOQ)
Bexkom Factory Supply New Technology Lightweight High Reliability Plastic Shell Salt Spray Corrosion Resistance Medical Connector
US$
1.20
-
3.90
5 Pieces
(MOQ)
Bexkom Manufacturing High Mating Cycles High Reliability Plastic Shell Salt Spray Corrosion Resistance Medical Connector
US$
1.20
-
3.90
5 Pieces
(MOQ)
1/4
Jiangsu Weifu Special Equipment Co., Ltd.
5 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Reliability Customized Steam Pressure High Temperature High Pressure Direct Current Steam Boiler
US$
51,510.00
-
2,060,440.00
1 Set
(MOQ)
Premium Steam Boilers for Industrial Applications with High Reliability
US$
6,197.00
-
53,320.00
1 Piece
(MOQ)
Three Pass Furnace Designed for High Efficiency and Reliability
US$
6,197.00
-
53,320.00
1 Piece
(MOQ)
Advanced High Thermal Efficiency Steam Boilers for Reliability
US$
6,197.00
-
53,320.00
1 Piece
(MOQ)
1/4
Haiyan Jinhan Import-Export Co., Ltd.
4 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Gpa, Gpax, Gpar High-Reliability Current Transducer
Negotiable
1 Piece
(MOQ)
Fps High-Reliability Power Totalizer (Power Totalizer)
US$
500.00
-
1,000.00
1 Piece
(MOQ)
Fppft Dual Output High-Reliability Power Factor Transducer
US$
873.00
1 Piece
(MOQ)
Gppft Dual Output High-Reliability Power Factor Transducer
Negotiable
1 Piece
(MOQ)
1/4
Hangzhou HollySys Automation Co., Ltd.
23 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Hollysys High Performance High Reliability Large Scale Programmable Logic Controller Lk PLC
US$
279.00
-
2,999.00
1 Piece
(MOQ)
Hollysys High Performance High Reliability Compact Programmable Logic Controller Le Compact PLC
US$
89.00
-
2,999.00
1 Piece
(MOQ)
Hollysys High Performance & Reliability Functional Safety Sil2 Programmable Logic Controller Lks PLC
US$
299.00
-
2,999.00
1 Piece
(MOQ)
Hollysys High Accuracy High Reliability Side-Mounted Top-Mounted Al2000 Magnetic Level Gauge
US$
125.00
-
199.00
1 Piece
(MOQ)
1/4
TKM (DONGGUAN) MEMBRANE TECHNOLOGY LTD.
13 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Customize Waterproof High Reliability Embossed Flexible Cola Machine Membrane Switch
Negotiable
100 Pieces
(MOQ)
High Reliability Durability 3m Adhesive Hygiene Medical Membrane Switches
Negotiable
100 Pieces
(MOQ)
High Reliability Silicone Rubber Button Keypad
Negotiable
100 Pieces
(MOQ)
High Reliability Digital Printing Hygiene Medical FPC Circuit Membrane Switches
US$
3.00
-
5.00
100 Pieces
(MOQ)
1/4
Hangzhou Zsoar Trading Co., Ltd.
2 yrs
·
Trading Company
Send Inquiry
High Load-Bearing Capacity Reliability Automotive Clutch Release Bearing
US$
7.50
-
8.00
10 Pieces
(MOQ)
Factory Made OEM Quality High Reliability Corrosion Resistance Gas Oxygen Lambda O2 Sensor for Car Engine
US$
12.50
-
13.00
5 Pieces
(MOQ)
High Reliability Maintenance-Free Auto Car O2 Oxygen Sensor
US$
19.50
-
20.00
5 Pieces
(MOQ)
High Reliability Maintenance-Free Heated Car Oxygen O2 Sensor
US$
13.50
-
14.00
5 Pieces
(MOQ)
1/4
1
385
Hot Products
China UPS
China Inverter
Ups Supply
Integrated Circuit
Temperature Transmitter
Power Supply
Solar Inverter
Led Light Power Supply
Related Manufacturers & Supplier
Power Supply Unit Factories
Power Inverter Factories
China Server Factories
Network Communication Device Factories
High Stability And Reliability Manufacturers
Provides High Reliability Ups Manufacturers
Voltage Stabilizer Manufacturers
Switching Mode Power Supply Manufacturers