Home
Supplier Discovery
Office Supplies
Other Stationery
Corrector Liquid Factories & Companies
Filter
Category
Arts & Crafts
Chemicals
Electrical & Electronics
Health & Medicine
Light Industry & Daily Use
More
Management Certification
Others
ISO9001:2015
ISO 9001
ISO45001:2018
OHSAS/ OHSMS 18001
More
R&D Capacity
OEM
ODM
Own Brand
Annual Revenue
<1 Million USD
2.5 ~ 5 Million USD
5 ~ 10 Million USD
No.of Employees
Less than 5 People
5-50 People
51-200 People
201-500 People
501-1000 People
Province & Region
Anhui
Fujian
Guangdong
Hebei
Henan
More
about corrector liquid
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
corrector liquid
90+ factories verified
Qingdao Seawin Biotech Group Co., Ltd.
26 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Popular Liquid Stimulant Fulmax 260 Designed Growth Promoter and Yellowing Corrector
US$
4.00
2,000 L
(MOQ)
Biostimulate Seawinner Bio-Corrector Nutrient Deficiency Specialist Fertilizer
US$
2.00
-
3.00
2 Tons
(MOQ)
Fulmax 260 Growth Promoter and Yellowing Corrector
US$
1,500.00
2,000 liters
(MOQ)
Fulmax260 Growth Promoter and Yellowing Corrector Hot Sale
US$
1,500.00
2,000 liters
(MOQ)
1/4
GUANGZHOU BANGTING COSMETICS CO., LTD.
12 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
OEM Organic Anti-Aging Face Serum Whitening Lightening Nicotinamide Arbutin Vitamin C Private Label Liquid Formula for Wrinkle
US$
0.40
-
1.20
100 pieces
(MOQ)
OEM Wholesale White Rice Ampoule Serum Brightens Skin Tone, Enhances Natural Luminosity Deep Hydration, Restore Skin's Radiance
US$
1.26
-
1.46
100 pieces
(MOQ)
Anti-Aging Serum Face Care Firming Hydrating Smoothing Moisturizing Hyaluronic Acid Facial Serum for Skin Care
US$
0.72
-
1.58
100 pieces
(MOQ)
Collagen Booster Toner Serum with Niacinamide & Hyaluronic Acid Facial Essence for All Skin Types
US$
1.11
-
1.39
100 pieces
(MOQ)
1/3
Guangzhou Tinsun Biotechnology Company Limited
11 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Factory Wholesale Liquid Soap for Body and Hand Feature and Cleaner Detergent Natural Extracts Cleanses Nourishes Liquid Soap
US$
1.35
-
1.55
100 Pieces
(MOQ)
Turmeric Dark Spot Corrector Serum Skin Glow Whitening Serum Kojic Acid Turmeric Serum
US$
1.68
-
3.05
100 Pieces
(MOQ)
Private Label Wholesale Ghk-Cu Facial Whitening Natural Organic Collagen Anti Age Blue Copper Peptide Face Serum
US$
3.47
-
5.34
100 Pieces
(MOQ)
Skincare Product Organic Natural Face Oil for Face Skin Care Pure Rosehip Seed Oil
US$
2.01
-
3.65
100 Pieces
(MOQ)
1/4
Guangzhou Boss Biological Technique Ltd.
17 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Qbeka Organic Plant Wrinkle Lifting Youth Toner
US$
2.40
-
3.30
100 Pieces
(MOQ)
Remove Wrinkle Lotion Fluid Fashionable Exclusive Irritation Free Formula CE Factory OEM
US$
1.80
-
2.30
500 Pieces
(MOQ)
OEM Safe Herbal Facts Delivery Happy+ Azelaic Acid Skin Care Oil-Control Serum Facial Treatment Product
US$
2.40
-
5.00
1 Piece
(MOQ)
Best Skin Care Product Effective Happy+ Sheep Placenta Skin Repairing Serum
US$
2.40
-
3.50
100 Pieces
(MOQ)
1/4
JINGFENG TIANTAI IMPORT & EXPORT (TIANJIN) CO., LTD
Send Inquiry
No Reservation Without Flocculation Fast Release Super Potassium Humate Liquid
US$
279.00
-
459.00
1 Ton
(MOQ)
Water Spray Organic Carbon Soil Conditioner Super Potassium Humate Liquid
US$
279.00
-
459.00
1 Ton
(MOQ)
Super Humic Fulvic Acid Liquid Super Potassium Humate Liquid
US$
279.00
-
459.00
1 Ton
(MOQ)
Gain Root Weight Soil Organic Matter Super Potassium Humate Liquid
US$
279.00
-
459.00
1 Ton
(MOQ)
1/4
Jiangsu Dehuang Stationery Co., Ltd.
18 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Wholesale Supplier Water Based Soluble Quick Dry Correction Fluid with Neylon Brush MSDS
US$
0.17
-
0.21
30,000 Pieces
(MOQ)
High Quality Durable Correction Fluid Student Correction Pen
US$
0.10
-
0.20
2,000 Pieces
(MOQ)
Eco Friendly Quick Dry Correction Pen for Student Stationery
US$
0.15
-
0.50
2,000 Pieces
(MOQ)
Eco Friendly Stationery Correction Pens with 7ml
US$
0.15
-
0.50
2,000 Pieces
(MOQ)
1/4
Sichuan Shihong Technology Co., Ltd
9 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Plant Source Calcium Magnesium Amino Acid Chelate Liquid Form for Foliar Fertiliser
US$
1,200.00
-
1,300.00
1 Ton
(MOQ)
1/4
Yixing Allwin Products Co., Ltd.
5.0
Send Inquiry
Seoul 1988 Wrinkle Care 4% for Retinol Ginseng for Essence Eye Cream Moisturizing Essence Set Tone Removing Moisturizer Snail Mucin 93% Rice Face Cream Set
US$
2.99
-
3.99
10 Pieces
(MOQ)
Online Wholesale Ready to Ship Customization Brighten Moisturize Gorgeous Facial Serum for Watermelon Niacinamide Serum Hydrating Facial Essence
US$
2.99
-
3.99
10 bottle
(MOQ)
Online Wholesale Retail 45ml Color Correcting Cc Cream Shielding Primer Moisturizing Brightening Acne Marks Fading Centalla Asiatica Color Corrector Concealer
US$
2.99
-
3.99
12 Pieces
(MOQ)
Nad+ Bio Cell Booster Lifting-Sil Ampoules Firmness Enhanced Elasticity Skin Lifting Serum Elasticity of Wrinkles and Fine Lines Nad+ Anti-Aging Essence
US$
3.99
-
4.99
5 Pieces
(MOQ)
1/4
Guangzhou Guocui Biological Technology Co., Ltd.
9 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Soothing Shimmer Caviar Face Serum Hydrating Liquid Highlighter Anti-Aging Skin Essence
US$
2.05
-
2.76
500 Pieces
(MOQ)
Vitamin B Niacinamide Face Serum Repairing Hydrating Anti-Aging Facial Essence
US$
1.82
-
2.47
500 Pieces
(MOQ)
Private Label Skin Care Products Deep Moisturizing Soothing Face Glowy Serum OEM Hydrating Anti-Aging Rose Shimmer Facial Serum
US$
1.89
-
2.72
3 pieces
(MOQ)
Black Snail Anti-Wrinkle Essence Hydrating and Nourishing Improving Dull Facial Essence
US$
1.68
-
2.38
500 Pieces
(MOQ)
1/4
Guangzhou Aifujia Biotechnology Co., Ltd.
5.0
Send Inquiry
Hydrolyzed Skin Care Peptide Nootropics Peptide Pentadecapeptide Lyophilized Powder
US$
2.02
-
3.99
10,000 Pieces
(MOQ)
Bulk Stock Dark Spot Corrector Whitening Cream Lighten Dark Spot Face Serum Remover Serum
US$
0.87
-
1.12
2 Pieces
(MOQ)
Ready to Shipin Stock Fast Dispatchprivate Label Brightening Serum Dark Spot Corrector Kojic Acid Serum for Facial Care
US$
1.41
-
1.80
500 Pieces
(MOQ)
Skin Glow Lightening Acne Dark Patches Turmeric Lemon Oil Acne Bright Skin Dark Spot Corrector Face Whitening Turmeric Serum
US$
0.99
-
2.32
100 Pieces
(MOQ)
1/4
Guangzhou Qidianban Car Accessories Co., Ltd.
8 yrs
·
5.0
·
Trading Company
Send Inquiry
200g Comprehensive Tile Surface Restoration Elixir
US$
0.99
-
1.09
3,000 Pieces
(MOQ)
Color Transfer Cleaner Fabric Color Corrector Dye Stain Remover
US$
0.59
-
0.65
3,000 Pieces
(MOQ)
Dye Transfer Cleaner Color Run Remover Penetrating Color Stain Remover
US$
0.59
-
0.65
3,000 Pieces
(MOQ)
Powder Detergent Stain Remover Color Care Cleaner Dye Transfer Cleaner
US$
0.59
-
0.65
3,000 Pieces
(MOQ)
1/4
Shandong Eledeep Bio Tech Co., Ltd.
5 yrs
·
Trading Company
Send Inquiry
Hot Face Micro Needling Serum Acne Treatment Liquid Face Cosmetics Sheep Placenta Repair Collagen Serum Facial Care Serum 10ml
US$
0.99
-
1.99
1 Piece
(MOQ)
Gz Massage Use Sponge Spicules Microneedle Acne Treatment Acne Scar Removing Skin Peel Algae Peeling Kit
US$
9.90
-
17.50
1 box
(MOQ)
Zs Nanoscale Copper Peptide Powder 99% Purity Ghk-Cu Promote Collagen Regeneration Cosmetic Raw Materials Wrinkle Removal Repair
US$
3.50
-
4.50
1 Set
(MOQ)
Private Label 7 Types of Micro Needle Serum Facial Serum
US$
9.90
-
19.50
1 box
(MOQ)
1/4
Guangzhou Xiufangyuan Beauty Equipment Co., Ltd.
Send Inquiry
Lip Dark Spot Corrector & Brightening Serum - for Pinker, Fuller Lips - Natural Lightening Treatment for Hyperpigmentation
US$
28.00
1 Piece
(MOQ)
Advanced Dark Lip Corrector Treatment Essence Targets and Fades Melanin Deposits to Restore Natural Lip Color Intense Brightening Serum
US$
40.00
-
80.00
1 Piece
(MOQ)
on Sale Scalp Hair Concealer Liquid Hair Root Dye Color Barbershop Salon Cover Permanent Corrector for Fine Hair and Bald Spots
US$
2.80
20 Pieces
(MOQ)
1/4
Ningbo Becol Stationery & Gifts Co., Ltd.
10 yrs
·
4.9
·
Trading Company
Send Inquiry
High Quality 7ml Correction Pen with Metal Tip for School
US$
0.13
-
0.15
10,000 Pieces
(MOQ)
1/4
Guangzhou Mebamy Cosmetics Co., Ltd.
5.0
Send Inquiry
Natural Formula Mandelic Pigmentation Corrector Hyaluronic Acid Night Serum
US$
1.79
-
2.35
3,000 Pieces
(MOQ)
Private Label Organic Dark Spot Corrector Brightening Serum for Face
US$
1.52
-
2.35
3,000 Pieces
(MOQ)
Private Custom Kojic Acid & Niacinamide Dark Spot Corrector Serum
US$
1.33
-
2.38
3,000 Pieces
(MOQ)
OEM Dark Spot Corrector for Face Body Effective Moisturizing Skin Brightening Serum
US$
1.65
-
2.12
3,000 Pieces
(MOQ)
1/4
Guangzhou Huaxinsheng Daily Chemical Products Co., Ltd.
1 yrs
·
Trading Company
Send Inquiry
Natural Herbal Plant Extract Fresh Breath Teeth Colour Corrector Teeth Powder
US$
0.70
-
1.50
1 Piece
(MOQ)
Natural Whitening Teeth Powder Deep Cleansing Purple Color Corrector Whitening Teeth Powder
US$
0.70
-
1.50
1 Piece
(MOQ)
Natural Purple Whitening Teeth Powder Colour Corrector Teeth Whitening
US$
0.70
-
1.50
1 Piece
(MOQ)
Tooth Whitening Remove Stains Fresh Breath Tooth Powder for Oral Care
US$
0.70
-
1.50
1 Piece
(MOQ)
1/4
STARSE Energy and Technology (Group) Co., Ltd.
22 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Volume Corrector Metering CE ISO Certified City Gas Distribution Flowmeter
US$
100.00
-
1,000.00
1 Set
(MOQ)
CE ISO Certified Volume Corrector Metering Long Operational Lifespan Ultrasonic Flowmeter
US$
100.00
-
1,000.00
1 Set
(MOQ)
4G Module Support CE ISO Certified City Gas Distribution Flowmeter
US$
100.00
-
1,000.00
1 Set
(MOQ)
CE ISO Certified Low Power Consumption Ultrasonic Flowmeter
US$
100.00
-
1,000.00
1 Set
(MOQ)
1/4
Guangdong RoRo Baby Products Co., Ltd.
5.0
Send Inquiry
Manufacturer's Full Silicone Nipple Corrector Breast Nipple Shield for Moms Made with PP Material
US$
0.27
-
0.52
1,000 Sets
(MOQ)
Silicone Nipples Inverted Nipples Corrector
US$
0.43
-
0.49
1,000 Pieces
(MOQ)
Silicone Nipple Corrector Silicone Material Breast Nipple Shield
US$
0.30
-
0.50
1,000 Sets
(MOQ)
Portable Women's Silicone Nipple Orthotics Manual Breast Pump Teat Massager Corrector Nipple Aspirator Retraction Sucker Baby
US$
0.43
-
0.49
1,000 Pieces
(MOQ)
1/4
QINGYUAN KEMEI COSMETICS Co., LTD.
4.9
Send Inquiry
Hydrating Anti-Aging Intensive Dark Spot Corrector Serum for Flawless Complexion
US$
0.99
-
1.36
10,000 Pieces
(MOQ)
Custom Logo Organic Vegan No Paraben Tightening Dark Spot Corrector Anti-Aging Tallow Face Serum
US$
0.71
-
1.02
10,000 Pieces
(MOQ)
OEM Best Dark Spot Corrector Lightening Kojic Acid Niacinamide Alpha Arbutin Whitening Serum
US$
0.95
-
1.15
5,000 Pieces
(MOQ)
OEM Glow Serum 10% Niacinamide 4% Tranexamic Acid Face Corrector Glycerin Aloe Vera Hyaluronic Acid Serum
US$
1.15
-
1.24
10,000 Pieces
(MOQ)
1/4
Guangzhou Shiruoni Cosmetics Co., Ltd.
4.9
Send Inquiry
Best Natural Skin Care Serum Dark Spot Corrector Kojic Acid Face Serum
US$
2.40
-
2.65
1,000 Pieces
(MOQ)
Hot Selling Natural Skin Care Serum Dark Spot Corrector Kojic Acid Face Serum
US$
2.40
-
2.65
1,000 Pieces
(MOQ)
Natural Dark Spot Corrector Brightening Whitening Kojic Acid Face Serum
US$
2.40
-
2.65
1,000 Pieces
(MOQ)
Rose Face Serum, Moisturizing Serum Hydrating Face Serum Rose Essence with Rose Petals Extract Hyaluronic Acid Trehalose B5 Vitamin Alcohol Free Facial
US$
0.99
-
3.99
1,000 Pieces
(MOQ)
1/4
Shandong Shiyi Trading Co., Ltd.
4.0
Send Inquiry
Hot Sale 250g Almond Carrot Papaya Soap 7 Days Super Whitening Dark Spot Corrector Skin Soap
US$
0.85
-
1.85
192 Pieces
(MOQ)
Aha Brightening Skin Moisturizing Serum Facial Body Dark Spots Corrector Care Essence
US$
0.55
-
1.85
48 Pieces
(MOQ)
Soap 7 Days Whitening Corrector Skin Lightening Face Bleaching Body Bathing Whitening Soap
US$
0.85
-
1.85
192 Pieces
(MOQ)
Whitening Corrector Lightening Skin Solid Bar Chrysophanol Arbutin Soap
US$
0.85
-
1.85
192 Pieces
(MOQ)
1/4
Hangzhou Hengbang Industrial Co., Ltd.
14 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
SGS Biodegradable Certificated Seagrape Hydrating Facial Mask Nonwoven Fabric Sheet
Negotiable
10,000 Pieces
(MOQ)
100% Tencel Silk Mask Sheet From China Factory for Face Cosmetic Beauty Skin Care Invisible Disposable Masque
Negotiable
30,000 Pieces
(MOQ)
Dry Nonwoven OEM Skin Care Facial Mask Sheet (S Pattern)
US$
0.018
-
0.02
30,000 piece
(MOQ)
Skin Sos Organic Face Moisture Korean Mask Sheet
US$
0.047
-
0.049
30,000 Sets
(MOQ)
1/4
Guangzhou Kanglixin Medical Biotechnology Co, Ltd.
4.9
Send Inquiry
Wholesale 24K Gold Serum Private Label Organic Pure Gold Whitening Glow Anti Wrinkle Acne Aging Repair 24K Gold Face Serum
US$
1.50
-
2.00
50 pieces
(MOQ)
OEM Hydration Skin Tightening Lightening Serum Capsules Facial Collagen Hyaluronic Acid Serum Capsules
US$
1.80
-
2.50
1,000 pieces
(MOQ)
Face Serum Ordinary Niacinamide Serum Private Label OEM Skin Care Anti Aging Vc Facial Serum
US$
1.30
-
2.00
100 pieces
(MOQ)
Private Label 24K Gold Collagen Face Serum Anti Aging Reduce Wrinkles Hyaluronic Acid 24K Gold Serum
US$
1.50
-
2.00
50 pieces
(MOQ)
1/4
Sanli Biotechnology (Dalian) Co., Ltd
7 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Clinical Grade Deep Penetration Whitening Face Serum with Ellagic Acid and Transdermal Short Peptide for Effective Pigmentation Treatment
US$
182.00
-
238.00
100 kg
(MOQ)
Facial Niacinamide Serum Compatibility Booster Centella and Carnosine Mix Face Serum for Reducing Potential Niacinamide Flushing
US$
60.00
-
150.00
10,000 kg
(MOQ)
Advanced Hypoallergenic Whitening Face Serum with Niacinamide and Alpha-Arbutin for Sensitive Skin and Even Complexion
US$
126.29
-
165.14
100 kg
(MOQ)
Gentle Whitening and Hypoallergenic Face Serum with Niacinamide (Under 10PM Nicotinic Acid) and Raspberry Ketone Glucoside for All Skin Types
US$
126.29
-
165.14
100 kg
(MOQ)
1/4
Guangzhou Olehana Biotechnology Co., Ltd
4.7
Send Inquiry
Private Label Face Skin Care Repair Serum Moisturizing Mud Mask 2 In1facial Scrub Purifying Peel Kaolin Clay Mask
US$
1.98
-
3.78
500 pieces
(MOQ)
Private Label Korean Skincare Niacinamide Hyaluronic Acid Collagen Whitening Facial Serum Vitamin C E Face Serum for Skin
US$
1.88
-
2.98
1,000 pieces
(MOQ)
Private Label Luxury Anti Aging Niacinamide Hyaluronic Acid Collagen Whitening Facial Serum E Vitamin C Skin Carre Face Serum
US$
1.88
-
2.98
1,000 pieces
(MOQ)
Best Selling Private Label Anti Wrinkle Vitamin C Serum Hyaluronic Acid Retinol Natural Extract Bakuchiol Turmeric Face Serum
US$
1.88
-
2.98
1,000 pieces
(MOQ)
1/4
Guangzhou Yangshuo Biotechnology Co., Ltd
3 yrs
·
5.0
·
Trading Company
Send Inquiry
Beauty Cosmetics Skin Care Deep Collagen Anti-Wrinkle Lifting Overnight Mask Facial Sheet Masks
US$
0.45
-
0.75
100 Pieces
(MOQ)
Beauty Cosmetics Skin Care Lifting Firming and Moisturizing Collagen Anti-Wrinkle Facial Sheet Masks
US$
0.45
-
0.75
100 Pieces
(MOQ)
Beauty Skin Care Collagen Mask Refines Pores and Restores Elasticity Whitening Cosmetics
US$
0.50
-
0.65
100 Pieces
(MOQ)
Beauty Cosmetics Skin Care Repair Skin Rejuvenating Collagen Mask Cosmetics
US$
0.50
-
0.65
100 Pieces
(MOQ)
1/4
Guangzhou allfond electronics co.,ltd
17 yrs
·
5.0
·
Trading Company
Send Inquiry
Hot Selling Diamond Dermabrasion SPA Beauty Machine 2in1 Hydra and Microdermabrasion Machine
US$
750.00
-
790.00
1 Piece
(MOQ)
Hot Sale Portable 2 in 1 Hydro Dermabrasion Machine for Skin Care
US$
200.00
-
280.00
1 Piece
(MOQ)
Multifunction 6 in 1 RF Bipolar Oxygen Hydra Water Dermabrasion Facial Machine for Skin Care
US$
450.00
-
520.00
1 Piece
(MOQ)
2 in 1 Diamond Dermabrasion Hydro Facial Machine
US$
238.00
-
268.00
1 Piece
(MOQ)
1/4
Shijiazhuang Jiaoyan Technology Co., Ltd
Send Inquiry
Original Injected Popular Filler Minimizes Dark Circles Rejuran Healer Skinbooster
US$
204.00
-
210.00
1 Piece
(MOQ)
2025 New Hot Korea Original Dermal Filler Rejuran Hb Skinbooster
US$
108.00
1 Piece
(MOQ)
Korea Popular High-Quality Filler Rejuran Healer Skin Booster Mesotherapy Solution
US$
204.00
-
210.00
1 Piece
(MOQ)
Korea Injected Popular Hyaluronic Acid Skinbooster Rejuran Healer Skin Moisture Wrinkle
US$
204.00
-
210.00
1 Piece
(MOQ)
1/3
Runhite Biomedical (Shandong) Co., Ltd.
5.0
Send Inquiry
High Quality 5ml/365mg Poly-L-Lactic Acid Plla Filler for Revitalization Collagen
US$
30.00
100 Pieces
(MOQ)
Ronderm Ha Injectable Dermal Filler for Stimulating Collagen with Plla Sculptr
US$
25.00
-
35.00
5 Pieces
(MOQ)
Advanced Plla Skin Filler for Youthful Face, Chest, and Buttocks
US$
25.00
-
35.00
5 Pieces
(MOQ)
Premium Plla Filler for Face, Chest, and Buttocks Rejuvenation
US$
25.00
-
35.00
5 Pieces
(MOQ)
1/4
Wenzhou Smile Machinery Co., Ltd.
Send Inquiry
Big Size Wet Wipe Machines 5-30PCS Wet Wipe Machine Multi Sheet Cleaning Wipes Making Machine Manufacturing Production Line
US$
9,000.00
-
10,800.00
1 Set
(MOQ)
Double Folding Station Automatic Wet Wipes Making Machine for Refreshing Hand Flushable Wipes Travel Pack
US$
9,000.00
-
10,800.00
1 Set
(MOQ)
Local Service Support 5-30PCS Cleaning Wipes Wet Tissue Wipe Making Machine Home Care Wet Wipe Making Machines
US$
9,000.00
-
10,800.00
1 Set
(MOQ)
Full Auto Multi-Piece 2-20 Pieces Wet Wipes Machinery Customization Wet Tissue Wipes Manufacturing Wet Wipes Making Machine
US$
9,000.00
-
10,800.00
1 Set
(MOQ)
1/4
1
4
Hot Products
China Stationery
Office Supplies
Office Stationery
Stationery For School
Correction Liquid
China Corrector
Correction Fluid
Correction Pen
Related Manufacturers & Supplier
Corrector Stationery Factories
Stationery Liquid Corrector Factories
School Liquid Corrector Factories
Corrector Pen Factories
One Dollar Store Items Manufacturers
Metal Tip Liquid Corrector Manufacturers
White Liquid Corrector Manufacturers
Correcting Pen Manufacturers