Home
Supplier Discovery
Health & Medicine
Medical Diagnosis Equipment
Quantum Factories & Companies
Filter
Category
Consumer Electronics
Construction & Decoration
Electrical & Electronics
Light Industry & Daily Use
Manufacturing & Processing Machinery
More
Management Certification
ISO9001:2008
Others
ISO9001:2015
ANSI/ESD
ISO 9001
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
Guangdong
More
about quantum
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
quantum
600+ factories verified
Changzhou Four Point Engineering Co., Ltd.
Send Inquiry
Brand New Common Rail Diesel Fuel Injector for Toyota Hiace Quantum 2kd-Ftv 23670-30050 23670-39096
US$
90.19
-
100.07
1 Piece
(MOQ)
CT10 Turbocharger for Toyota Quantum 2.5D 2KDFTV 17201-30120 17201-30080
US$
68.36
-
73.67
1 Piece
(MOQ)
Most Selling Products New Turbocharger for Toyota Quantum 2KDFTV Engine 17201-30080 17201-30120 17201-30080
US$
68.36
-
73.67
1 Piece
(MOQ)
Great Car Engine Performance New Cheap Price Turbocharger Diesel Turbo for Toyota Quantum 17201-30080
US$
68.36
-
73.67
1 Piece
(MOQ)
1/4
SHANDONG ALPINA TYRE CO., LTD.
4.5
Send Inquiry
All Season Car Tires Commercial Tires Van Tires Toyota Quantum Tires
US$
35.00
-
45.00
100 Pieces
(MOQ)
All Season Car Tires Commercial Tires Van Tires Toyota Quantum Tires
US$
35.00
-
45.00
100 Pieces
(MOQ)
All Season Car Tires Commercial Tires Van Tires Toyota Quantum Tires Wsw
US$
35.00
-
45.00
100 Pieces
(MOQ)
All Season Car Tires Commercial Tires Van Tires Toyota Quantum Tires
US$
35.00
-
45.00
100 Pieces
(MOQ)
1/4
Kunshan Ast Optoelectronics Co., Ltd
6 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
PAR Meter for Greenhouse Outdoor Agriculture Plant and Hydroponics with Quantum Sensor
US$
45.94
-
53.90
50 Pieces
(MOQ)
Advanced Quantum PAR Meter with Dli for for Greenhouse LED Grow Lights Sunlight
US$
48.00
-
68.00
50 Pieces
(MOQ)
Convenient for Indoor Outdoor Plants Quantum Sensor PAR Meter
US$
50.63
-
63.40
50 Pieces
(MOQ)
Quantum PAR Meter Lux Meter Light Measurement Tool for Plants and Agriculture Wholesale
US$
45.94
-
53.90
50 Pieces
(MOQ)
1/4
Suzhou Thriving Medical Equipment Corp.
Send Inquiry
Quantum Resonance Magnetic Analyzer with Free Software Quantum Analyser Machine
US$
50.00
-
80.00
1 Piece
(MOQ)
Qmr998 Medical Equipment Spanish Quantum Resonance Magnetic Body Analyzer Price
US$
50.00
-
80.00
1 Piece
(MOQ)
Quantum Health Resonance Magnetic Analyzer Price Software Free Download with 47 Reports
US$
80.00
-
150.00
1 Piece
(MOQ)
Pendant Emf Bio Pendants Quantum Science Effects Necklace Scalar Energy Pendant
US$
0.50
-
2.00
100 Pieces
(MOQ)
1/4
Ningbo E-Fitness Import & Export Co., Ltd.
5.0
Send Inquiry
2025 Quantum Magnetic Resonance Body Analyzer Whole Body Health Analyzer with Report
US$
34.00
-
39.90
50 Pieces
(MOQ)
Magnetic Health Care Products Quantum Magnetic Analyzer Medical Equipment
US$
49.00
-
59.00
50 Pieces
(MOQ)
New Body Analyzer Quantum Resonance Magnetic Body Health Analyzer with Therapy Multiple Languages
US$
64.50
-
69.00
50 Pieces
(MOQ)
Hot Quantum Therapy Analyzer 54 Report 3 in 1 Magnetic Resonance Health Body Analyzer
US$
64.50
-
69.00
50 Pieces
(MOQ)
1/4
Beijing Zhongke Xinyuantechnology Co., Ltd.
Send Inquiry
Nvidia Mellanox Quantum-2 Mqm9700-Ns2f 400g Infiniband Switch
US$
23,000.00
-
25,500.00
1 Piece
(MOQ)
Nvidia Mellanox Quantum-2 Mqm9790-Ns2f 1u Ndr 400g Infiniband Switch
US$
23,000.00
-
24,500.00
1 Piece
(MOQ)
Nvidia Mellanox Quantum Qm8700 Hdr 200GB/S Infiniband Switch
US$
7,500.00
-
9,000.00
1 Piece
(MOQ)
Nvidia Quantum-2 Mqm9700-Ns2r Enterprise-Grade Infiniband Switching Solution
US$
16,000.00
-
18,000.00
1 Piece
(MOQ)
1/4
Shenzhen Dulcimer Technology Co., Ltd.
3 yrs
·
5.0
·
Trading Company
Send Inquiry
8-00974-05 Quantum Scalar I500 Lto-6 FC Tape Drive
US$
742.00
-
745.00
1 Piece
(MOQ)
Mr-L5mqn-01 Quantum Lto 5 Data Tape Cartridge (1.5/3.0TB)
US$
28.00
-
30.00
1 Piece
(MOQ)
Nvidia Mqm8700-HS2f Quantum Hdr Infiniband Switch
US$
4,500.00
-
4,560.00
1 Piece
(MOQ)
8-01832-01 Quantum Lto8 Fh Dual FC Drive for I500 I6000
US$
5,500.00
-
5,520.00
1 Piece
(MOQ)
1/4
PUTIAN BELTRI INC.
5.0
Send Inquiry
320W Quantum Board Mari PPE2.5umol
US$
52.30
500 Sets
(MOQ)
U-Light Quantum Board LED Grow Light 120W/240W/330W PPE2.8 Umol/J
US$
123.00
-
125.00
100 Sets
(MOQ)
2025 Hortione Quantum Board 120W Smart Control Dimmable UV/IR Best in Field LED Grow Light up to 2.7 Umol/J
US$
44.33
-
48.33
50 Sets
(MOQ)
Quantum Board-Q 120W Smart Control Grow Light
US$
63.00
-
67.00
50 Sets
(MOQ)
1/4
Suzhou Kamien Auto Parts Co., Ltd.
5.0
Send Inquiry
Wholesale Car Accessories Auto Parts Front Rear Factory Semi Metallic Ceramic Brake Pad for Toyota Corolla Altis Hiace Camry Quantum D1210
US$
2.00
-
8.00
50 Sets
(MOQ)
High Quality Semi Metallic Ceramic Auto Brake Pads for Toyota Corolla Altis Hiace Camry Quantum Wish Innova Prius Yaris Hilux
US$
2.00
-
8.00
50 Sets
(MOQ)
Semi Metallic Ceramic No Noise Auto Brake Pads for Toyota Altis Hiace Quantum Wish Innova Prius Yaris Hilux
US$
2.00
-
8.00
50 Sets
(MOQ)
Genuine Quality Semi Metallic Ceramic No Noise Auto Brake Pads for Toyota Altis Hiace Quantum Wish Innova Prius Yaris Hilux
US$
2.00
-
8.00
50 Sets
(MOQ)
1/4
GUANGZHOU POTENT MEDICAL EQUIPMENT JOINT-STOCK CO., LTD.
Send Inquiry
Urodynamic Detection System Pressure: -50CMH20 (-4.9kpa) ~200CMH20 (19.6kpa) Quantum Health Analyzer Medical Machine
US$
6,000.00
-
16,000.00
1 Piece
(MOQ)
Pressure: -50CMH20 (-4.9kpa) ~200CMH20 (19.6kpa) Clinical Urodynamic Potent Quantum Health Analyzer Urinary Surgery
US$
6,000.00
-
16,000.00
1 Piece
(MOQ)
Clinical Urodynamic System Pressure: -50CMH20 (-4.9kpa) ~200CMH20 (19.6kpa) Quantum Health Analyzer Medical Equipment
US$
6,000.00
-
16,000.00
1 Piece
(MOQ)
Clinical Urodynamic Pressure: -50CMH20 (-4.9kpa) ~200CMH20 (19.6kpa) Potent Quantum Health Analyzer Medical Machine
US$
6,000.00
-
16,000.00
1 Piece
(MOQ)
1/4
Shijiazhuang OurPCB Tech. Ltd.
19 yrs
·
Manufacturer/Factory
Send Inquiry
Aetherstream PRO Quantum-Enhanced Wiring System
US$
0.30
-
0.80
1 Piece
(MOQ)
Bauhaus Quantum Entanglement Aesthetic Standard
US$
0.50
-
5.00
1 Piece
(MOQ)
Proton Decay Inhibition Quantum Locking Circuit
US$
0.50
-
5.00
1 Piece
(MOQ)
Quantum Immortality Backup Memory Core
US$
0.50
-
5.00
1 Piece
(MOQ)
1/4
Zhejiang Cncd Transmission Equipment Co., Ltd.
16 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
HGH15-55 Linear System with Quantum Topology Linear Guides
US$
2.00
-
28.00
1 Piece
(MOQ)
Hgw15-45 Guide System with Quantum Neural Networks
US$
2.00
-
28.00
1 Piece
(MOQ)
High Precision HGH30-55 Linear Rails with Advanced Quantum Ellipsometry
US$
2.00
-
28.00
1 Piece
(MOQ)
Quantum Chaos Theory Hgw15-45 Blocks for Creative Minds
US$
2.00
-
28.00
1 Piece
(MOQ)
1/4
Bynasci Technology (Shanghai) Co., Ltd.
9 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Sub-Zero Shelf-Type Frost-Free Vaults Storage Solution with Vibration Damping (<0.5g) for Quantum Computing Chips
US$
12,000.00
-
14,000.00
1 Piece
(MOQ)
Quantum Computing Compatible Freezer Rscs-280 for Next-Gen Storage
US$
2,000.00
-
4,000.00
1 Piece
(MOQ)
Shelf-Type Frostless Quantum DOT Storage Solution with Darkroom Conditions
US$
4,500.00
-
5,000.00
1 Piece
(MOQ)
EMI-Shielded Frost-Free Quantum Chip Storage Solution with Magnetic Flux Stabilization
US$
12,000.00
-
14,000.00
1 Piece
(MOQ)
1/4
Shenzhen Jinzhou Precision Technology Co., Ltd. Mould Branch
40 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Quantum Computing-Optimized Edge Plate Stamping Die (QUBO Algorithm Designed)
US$
1.00
-
40,000.00
1 Piece
(MOQ)
Quantum Cooling Chip Manifold Dieultra-Pure Aln Ceramic 500W/Cm² Cooling Jedec 51-6
US$
10.00
-
100,000.00
1 Set
(MOQ)
Quantum-Sensor Aligned Die for Microchannel Plates (0.05mm Pitch ISO 8015)
US$
100.00
-
40,000.00
1 Set
(MOQ)
Quantum Clock Manifold Die Zero-Cte Cervit Glass Itu-T G. 8272
US$
1.00
-
40,000.00
1 Piece
(MOQ)
1/4
Hebei Hengwang Transmission Machinery Co., Ltd
9 yrs
·
Manufacturer/Factory
Send Inquiry
Low-Magnetic Permeability Spring Coupling for Quantum Computing Cryostat Rotary Seals
US$
900.00
-
1,000.00
1 Piece
(MOQ)
Quantum DOT-Embedded Ball-Cage Universal Coupling for Strain Mapping
US$
900.00
-
1,000.00
1 Piece
(MOQ)
Cryogenically Stabilized Ball-Track Universal Coupling for Quantum Computing Systems
US$
900.00
-
1,000.00
1 Piece
(MOQ)
Quantum DOT-Luminescent Ball-Type Universal Coupling for Strain Visualization
US$
900.00
-
1,000.00
1 Piece
(MOQ)
1/4
Contec Medical Systems Co., Ltd.
5.0
Send Inquiry
Quantum Medical Instrument Wearable SpO2/ECG Monitor
US$
200.00
-
300.00
1 Piece
(MOQ)
Advanced Quantum Health Analyzer with Touchscreen for Ambulance Use
US$
300.00
-
450.00
1 Piece
(MOQ)
OLED Adult Oximeter Quantum Health Analyzer Medical Supplies
Negotiable
1 Piece
(MOQ)
Contec ECG90g Quantum Health Equipment Home Medical ECG Machine
US$
200.00
-
399.00
1 Piece
(MOQ)
1/4
Hubei YJT Technology Co., Ltd.
21 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Pain Relief Light Quantum Healing Lllt Laser for Neck Pain Laser Acupuncture
US$
600.00
-
1,399.00
1 Piece
(MOQ)
650nm High Blood Pressure Laser Treatment Laser Blood Irradiation Soft Laser Irradiation Device / Quantum Healing Laser Device Laser Acupuncture Machine
US$
99.00
-
299.00
1 Piece
(MOQ)
Hypertension Blood Pressure Quantum Healing Laser Therapeutic Healthcare Physiotherapy Medical Instrument
US$
600.00
-
1,399.00
1 Piece
(MOQ)
Hypertension High Blood Pressure Quantum Healing Rehabilitation Laser Light Therapy
US$
99.00
-
299.00
1 Piece
(MOQ)
1/4
Ningbo Chuanghui Machinery Manufacturing Co., Ltd
17 yrs
·
Manufacturer/Factory
Send Inquiry
Quantum Sensing Injection Molding Machine - Advanced Monitoring Technology From China
US$
111.00
1 Piece
(MOQ)
Quantum Series Injection Molders - Chinese Precision Engineering
US$
13,000.00
-
14,000.00
1 Piece
(MOQ)
Quantum Sensing Injection Molding Machine Advanced Monitoring From China
US$
111.00
1 Piece
(MOQ)
Quantum-Leap Injection Systems Next-Gen Tech From China
US$
13,000.00
-
14,000.00
1 Piece
(MOQ)
1/4
Heyuan Yushi Technology Co., Ltd
8 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Quantum Communication Terminal Sapphire Glass Window Lens, Key Security
US$
1.00
-
100.00
1 Piece
(MOQ)
Quantum Sensing Sapphire Glass Lens Enhances Detection Sensitivity
US$
1.00
-
100.00
1 Piece
(MOQ)
Quantum Simulator Sapphire Glass Lens, Studies Complex Quantum Systems
US$
1.00
-
100.00
1 Piece
(MOQ)
Quantum Entanglement Source Sapphire Glass Window Lens, Photon Pairs
US$
1.00
-
100.00
1 Piece
(MOQ)
1/4
MEDSINGLONG CO LTD
13 yrs
·
4.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
4th Generation Quantum Health Analyzer Resonance Magnetic with Hand Touch
US$
15.00
-
49.00
1 Piece
(MOQ)
Clinical Analytical Instruments 3rd Mini Body Health Analyzer Health Testing Quantum Resonance Magnetic Analyzer
US$
19.90
-
65.00
1 Piece
(MOQ)
Good Performance Touch Screen Generation 3D Nls Quantum Analyzer
US$
190.00
-
490.00
1 Piece
(MOQ)
2022 Newest Technology Body&Face Quantum 3D RF Skin Tightening Machine
US$
800.00
-
2,000.00
1 Piece
(MOQ)
1/4
Hangzhou Hongtong Wire&Cable Co., Ltd.
22 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
High-Conductivity Silk-Balanced Litz Wire for Hi-Fi Audio & Quantum Computing with Gold-Plated
US$
13.00
-
27.00
100 kg
(MOQ)
Quantum Computing Litz Wire Cryogenic Stability (-269° C) Qubit Interconnect Solutions
US$
13.00
-
35.00
100 kg
(MOQ)
Cryogenic Super-Flex Silk Coated Enameled Wire for Quantum Computers (-269° C Spec)
US$
13.00
-
27.00
100 kg
(MOQ)
Silk Covered Wire for Quantum Computing Cryogenic Signal Integrity Qubit Interconnects
US$
13.00
-
27.00
100 kg
(MOQ)
1/4
Shenzhen Green Earth Opto-Electronic Co., Ltd
16 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Quantum Encryption LED Lamp for Secure Government Facilities
US$
7.00
-
15.00
100 Pieces
(MOQ)
Quantum DOT Technology Downlight for Vivid Color Display
US$
7.00
-
15.00
100 Pieces
(MOQ)
Quantum Encryption Lamp for Government Facility Security
US$
7.00
-
15.00
100 Pieces
(MOQ)
Quantum DOT Technology LED Lamp for Vivid Color Display
US$
7.00
-
15.00
100 Pieces
(MOQ)
1/4
Guangdong Xinling Industrial Co., Ltd
5 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
SMT Line Automated Dispensing Systems Quantum Nordson Dispensing Machine
US$
9,999.00
-
39,999.00
1 Piece
(MOQ)
Besi Datacon 8800 FC Quantum Advx Die Bonding Machine Manufacture Die Bonder
US$
19,999.00
-
69,999.00
1 Piece
(MOQ)
Besi Datacon 8800 FC Quantum Advanced Die Bonding Machine
US$
320,000.00
-
350,000.00
1 Piece
(MOQ)
Besi Datacon 8800 FC Quantum Advanced Manufacture Die Bonding Machine Die Bonder
US$
320,000.00
-
350,000.00
1 Piece
(MOQ)
1/4
Zhongshan Guanghuilong Hardware Products Co., Ltd
12 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Featuring CS8 Quantum DOT Color-Changing Indicator Smart Lock
US$
16.00
-
20.00
100 Pieces
(MOQ)
Quantum Encryption Technology CS8 Unbreakable Security Smart Lock
US$
16.00
-
20.00
100 Pieces
(MOQ)
Integrated CS8 Quantum Radar Stealth Detection Smart Lock
US$
16.00
-
20.00
100 Pieces
(MOQ)
Utilizing CS8 Quantum-Resistant Cryptographic Protocol Smart Lock
US$
16.00
-
20.00
100 Pieces
(MOQ)
1/4
Shenzhen Guangyang Zhongkang Technology Co., Ltd.
5.0
Send Inquiry
Suyzeko Thz Blower Electric Heating Therapy Quantum Wellness Body Enhancement Terahertz Therapy Device
US$
199.00
-
219.00
499 Pieces
(MOQ)
Quantum Resonance Magnetic 25D Nls Rapid Body Test Health Analyzer
US$
1,280.00
-
1,580.00
1 Piece
(MOQ)
Electric Terahertz Quantum Energy Device Terahertz Wave Foot Therapy Device Pemf Energy Meter
US$
299.00
-
449.00
1 Piece
(MOQ)
Suyzeko Quantum Wellness Relaxation Thz Terahertz Therapy Machine
US$
199.00
-
299.00
100 Pieces
(MOQ)
1/4
Shandong Luzong Economic and Trade Co., Ltd.
10 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Customized Single-Photon Detector Housing Stamping Parts for Terrestrial Free-Space Quantum Key Distribution
US$
1.00
-
3.00
8 Tons
(MOQ)
Customized Magnetic Shielding Stampings Parts for Quantum Computing Modules
US$
1.00
-
3.00
8 Tons
(MOQ)
OEM Josephson Junction Array Stampings Parts for Quantum Voltage Standard Chips
US$
1.00
-
3.00
8 Tons
(MOQ)
OEM Quantum Memory Crystal Mount Stamping Parts for Satellite-Based Quantum Repeater Nodes
US$
1.00
-
3.00
8 Tons
(MOQ)
1/4
Shandong Suyiran International Trade Co., Ltd.
5.0
·
Manufacturer/Factory
Send Inquiry
Quantum DOT Photonic Panel - Tunable Spectrum Transmission
US$
8.00
-
15.00
100 Square Meters
(MOQ)
Topological Quantum Composite - Fault-Tolerant Qubit Protection
US$
8.00
-
15.00
100 Square Meters
(MOQ)
Qubit Stability Panel – Quantum Decoherence Suppression12.
US$
8.00
-
15.00
100 Square Meters
(MOQ)
Quantum-Enhanced Lightweight Panel - Nano-Structured for Maximum Strength
US$
8.00
-
15.20
100 Square Meters
(MOQ)
1/4
Zhangjiagang City Best Machinery Co., Ltd.
16 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Bst-1400A Quantum-Fork Servo Plastic Cutlery Injection Molding Machine with 48-Cavity Thin-Wall Pack and on-Line Tine Vision
US$
16,400.00
-
19,400.00
1 Piece
(MOQ)
Bst-3000A Quantum-Servo Pet Preform Injection Molding Machine with Ai-Optimized Cycle Control and Ultra-High Shot Capacity
US$
35,500.00
-
38,500.00
1 Piece
(MOQ)
Bst-1400A Quantum-Grip Servo Ballpoint & Marker Pen Injection Molding Machine with Anti-Slip Texture Zone and Quick-Change Color Screw
US$
16,400.00
-
19,400.00
1 Piece
(MOQ)
Bst-1000A Quantum-Servo Tamper-Evident Bottle-Cap Injection Molding Machine with Fast-Cycle Multi-Cavity and in-Mold Closing System
US$
13,400.00
-
15,400.00
1 Piece
(MOQ)
1/4
Crystrong Photonics Technology Co., Ltd.
14 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Linbo3 Electro-Optic Modulator for Photonic Quantum Systems
Negotiable
1 Piece
(MOQ)
Precision Ppln Crystals for Your Quantum Photonics
US$
1.00
-
100.00
1 Piece
(MOQ)
Precision Ppln Crystal for Quantum Photonics
US$
1.00
-
100.00
1 Piece
(MOQ)
Advanced Ppln Waveguide for Quantum Optics
Negotiable
1 Piece
(MOQ)
1/4
Guangzhou Aevision Electronics Technology Co., Ltd.
4.7
Send Inquiry
Aevision 55" Qled Quantum DOT 4K Ultra HD LCD Splicing Screen 3000: 1 0.88mm Seam Commercial Display
US$
301.40
-
314.50
1 Piece
(MOQ)
Hot Sale 46 Inch 3X3 Qled Quantum DOT Intelligent Split Screen Monitor 0.88 1.7 3.5mm Splicing Screen Wide Perspective LCD Display
US$
301.40
-
314.50
1 Piece
(MOQ)
Aevision Hot-Selling 50-Inch 4K True Ultra HD Contrast 5000: 1 Ultra-Wide Splicing Screen Monitor 600CD Brightness Multi Screen Qled Quantum Commercial Display
US$
342.00
-
351.00
5 Pieces
(MOQ)
Aevision 65 Inch 4K Qled Quantum 178 Degree Wide Viewing Angle Monitor 60000 Hours Continuous Operation Intelligent Splicing Screen Commercial Display
US$
516.30
-
523.20
5 Pieces
(MOQ)
1/4
1
20
Hot Products
Medical Instrument
Laser Treatment
Medical Equipment
Light Therapy
Laser Therapy Device
Health Analyzer
Laser Light Therapy
Quantum Analyzer
Related Manufacturers & Supplier
Low Laser Therapy Factories
Therapeutic Laser Factories
China Phototherapy Factories
Laser Therapeutic Instrument Factories
Low Level Laser Therapy Manufacturers
Quantum Magnetic Analyzer Manufacturers
Quantum Magnetic Resonance Analyzer Manufacturers
Quantum Magnetic Resonance Manufacturers