Home
Supplier Discovery
Consumer Electronics
Steam Cleaner
Formaldehyde Cleaner Factories & Companies
Filter
Category
Chemicals
Consumer Electronics
Construction & Decoration
Electrical & Electronics
Health & Medicine
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
More
Province & Region
Anhui
Beijing
Chongqing
Fujian
Gansu
More
about formaldehyde cleaner
Technological Innovation
Reliable Supply Chains
Substantial Manufacturing Capabilities
formaldehyde cleaner
300+ factories verified
Foshan HWS Mechanical and Electrical Equipment Co., Ltd
Manufacturer/Factory & Trading Company
Send Inquiry
3000W All-in-One Dry Steam Cleaner: Car Ppf/Interior + Home Cleaning/Sterilization/Formaldehyde
US$
198.00
-
228.00
1 unit
(MOQ)
Dry Steam Cleaner for Car Interior/Ppf Prep & Home Sterilization/Formaldehyde Removal
US$
168.00
-
200.00
1 unit
(MOQ)
3600psi Diesel Commercial 15L High Pressure Car-Wash Pressurized Cleaner Gun Equipment
US$
680.00
1 unit
(MOQ)
250bar 15L Diesel Commercial High Pressure Car Washer Water Jet Cleaner Pump
US$
680.00
1 unit
(MOQ)
1/4
Guangdong Liangyueliang Photoelectric Technology Co., Ltd.
10 yrs
·
4.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
4-in-1 Filter Air Cleaner with Pm2.5/Formaldehyde/Bacteria Removal
US$
39.00
-
45.00
100 Pieces
(MOQ)
Intelligent Air Cleaner with Digital Pm2.5 & Formaldehyde Monitoring
US$
100.00
-
110.00
100 Pieces
(MOQ)
75W Powerphotocatalytic Oxidation Air Cleaner with for Formaldehyde Removal
US$
95.00
-
105.00
100 Pieces
(MOQ)
Ture HEPA13 Air Purifier with 98.8% Formaldehyde Removal 80m² Coverage
US$
180.00
-
200.00
500 Pieces
(MOQ)
1/4
Ningbo Texous Electrical Appliances Co., Ltd
3 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Multi-Purpose Portable High Pressure Handle Steam Cleaner
US$
14.00
-
16.00
1,000 Pieces
(MOQ)
Multi-Function Handheld Steam Cleaner – Wired 1500W for Pet Bowls & Home Cleaning
US$
10.00
-
11.00
1,000 Pieces
(MOQ)
Vacuum and Steam Carpet Cleaner – High-Pressure Fast Heating, Portable
US$
11.60
-
12.60
1,000 Pieces
(MOQ)
High Quality Hot Selling Home Steam Cleaner Mop for Indoor Cleaning
US$
27.50
-
29.00
1,000 Pieces
(MOQ)
1/4
Ningbo City Haishu Saiwei Household Appliances Co., Ltd.
Send Inquiry
Multi Purpose Professional Household High Pressure and Temperature Steam Cleaner (SW618-D)
US$
37.40
-
40.60
200 Pieces
(MOQ)
Multi Purpose Professional Household High Pressure and Temperature Steam Cleaner (SW608-A)
US$
35.90
-
39.10
200 Pieces
(MOQ)
Multi Purpose Professional Household High Pressure and Temperature Steam Cleaner (SW618-C)
US$
46.50
-
50.50
200 Pieces
(MOQ)
Multi Purpose Professional Household High Pressure and Temperature Steam Cleaner (HW618-A)
US$
46.00
-
50.00
200 Pieces
(MOQ)
1/4
Ningbo Gemer Electric Appliance Co., Ltd.
1 yrs
·
Trading Company
Send Inquiry
Professional Steam Cleaner Multi Purpose Household High Pressure and Temperature
US$
47.50
-
50.00
300 Pieces
(MOQ)
Household Steam Cleaner 2000W High-Pressure for Home, Car, Floor, and Carpet Cleaning
US$
49.00
-
53.00
1,400 Pieces
(MOQ)
Multipurpose Steam Cleaner Powerful Handheld Steam Hot Sale High-Temperature Steam Handheld for Home Car
US$
49.00
-
53.00
300 Pieces
(MOQ)
Professional Household High-Pressure & High-Temperature Multi-Purpose Steam Cleaner Chemical-Free Cleaning
US$
49.00
-
53.00
1,400 Pieces
(MOQ)
NINGBO DNT TECHNOLOGY CO., LTD.
12 yrs
Send Inquiry
2025 New Household 1900ml Large Water Tank 40mins long time working 5Bar High Pressure Portable Steam Cleaner
US$
29.75
-
34.35
100 Pieces
(MOQ)
2025 Hot Sale Household Multi-purpose Kitchen Cleaning Carpet Cleaning Machine Portable Steam Cleaner with 300000PA High Pressure and 99.99% Sterilizing Rate
US$
16.35
-
18.65
1,000 Pieces
(MOQ)
2025 new design 1200ml water tank Multi function Household Steam Cleaner with 3.5-4.5 Bar Steam Pressure and Blue Light Anti-bacterial Function
US$
19.75
-
21.75
1,000 Pieces
(MOQ)
Compact High Pressure Steam Cleaner for Household Use
US$
9.95
-
11.45
100 Pieces
(MOQ)
1/4
Quanzhou E-Best International Trade Co., Ltd.
4 yrs
·
Trading Company
Send Inquiry
Handheld 2500W Steam Cleaner for Home Kitchen Grease Bathroom Grout Car Seats
US$
27.14
-
30.53
50 Pieces
(MOQ)
Handheld 1000W Steam Cleaner for Home Kitchen Grease Bathroom Grout Car Seats 350ml Tank 9-Piece Kit
US$
11.08
-
12.46
50 Pieces
(MOQ)
High-Temperature 135°C Steam Cleaner Home Sanitizing Home Appliance
US$
18.09
-
20.99
50 Pieces
(MOQ)
Fast Heat-up Steam Cleaner for Home Portable Garment Steamer Vertical Cleaning Supplies Home Appliance
US$
16.99
-
19.11
50 Pieces
(MOQ)
1/4
Ningbo Liyyou Group Co., Ltd.
7 yrs
·
5.0
·
Trading Company
Send Inquiry
Versatile Carpet Cleaner Shampooer for Powerful Detergent Action
US$
88.50
-
90.50
535 Pieces
(MOQ)
Wet Steam Vacuum Cleaner for Powerful Moisture and Dirt Removal
US$
80.00
-
82.00
1,000 Pieces
(MOQ)
Steam Mop Cleaner, 10 in 1 Convenient Detachable Handheld Steam Cleaner
US$
35.55
-
36.55
1,000 Pieces
(MOQ)
Steam Mop, Steamer, Tile, Hard Wood Floor Cleaner
US$
35.55
-
36.55
1,000 Pieces
(MOQ)
1/4
Olang Technology Co., Ltd.
Send Inquiry
4 Bar High Temperature Steam Cleaner 1800ml 2000W 3m Corded Steam Cleaner
US$
37.00
-
45.00
1 Piece
(MOQ)
1.8L High Temperature Commercial Steam Cleaning Machine 5 Bar 1800W Steamer Cleaner
US$
57.00
1 Piece
(MOQ)
1.2L Multifunctional 3 Bar High Pressure Steam Cleaner Tile Floor Upholstery Cleaning Machine 2500W
US$
27.00
1 pieces
(MOQ)
Handheld Steam Vacuum Cleaner Kitchen Steam Cleaning Machine 3bar 3800W 110V220V
US$
27.00
1 Piece
(MOQ)
Anisi (Shanghai) Industrial Co., Ltd.
5.0
Send Inquiry
Commercial Rug Cleaning Equipment Supplies Water Extractor Vacuum Carpet Cleaner with Metal Lever for Hotel
US$
690.00
-
890.00
1 Piece
(MOQ)
Heated Carpet Washing Cleaner Machine Extractor Injector Steam Vacuum Cleaner for Carpet Sofa Dust Mite Removal
US$
690.00
-
890.00
1 Piece
(MOQ)
Professional Carpet Cleaning Equipment Vacuum Extractor Washing Cleaner Machine for Car Seat Detailing Upholstery
US$
690.00
-
890.00
1 Piece
(MOQ)
Commercial Kitchen Steam Cleaner High-Temperature Grease Removal for Restaurant Hood Duct Cleaning
US$
1,480.00
-
1,980.00
1 Piece
(MOQ)
1/4
NINGBO CILIANG IMPORT AND EXPORT CO., LTD.
Send Inquiry
Steam Sweeper Cleaning Machine Floor Steamer Multi Function Manufacture Hot Selling Cleaner
US$
21.00
-
21.50
500 Pieces
(MOQ)
X10 Ultra Household Vacuum Mop Steam Mops Carpet Steam Cleaners vacuum Cleaner
US$
24.80
-
26.50
500 Pieces
(MOQ)
X10 High Pressure Water Vapor Mop Floor Carpets Cleaning Steam Cleaner
US$
21.00
-
21.50
500 Pieces
(MOQ)
Multifunctional Vibration Steam Mop Washing Machine Vacuum Cleaner Pressure Washer
US$
24.60
-
26.50
500 Pieces
(MOQ)
1/4
Shenzhen City Huahanxing Technology Co., Ltd.
7 yrs
·
Trading Company
Send Inquiry
Portable Handheld Steam Cleaner High Pressure Steam Vacuum Cleaner for Carpet and Sofa
US$
19.99
-
20.99
10 Pieces
(MOQ)
Multifunctional High Pressure Steam Cleaner 1500W Commercial Car Cleaning Machine Air Conditioning Home Kitchen Hood Cleaner
US$
23.69
-
23.99
10 Pieces
(MOQ)
Wholesale Hot Selling Portable High Temperature Sterilization Mite Removal High Pressure Handheld Steam Cleaner
US$
15.59
-
16.99
10 Pieces
(MOQ)
2500W Steaming Cleaner High Temperature and Pressure Steam Cleaner Electric for Kitchen Cleaning
US$
19.99
-
20.99
10 Pieces
(MOQ)
1/4
Yuyao Goldsen International Trade Co., Ltd.
Send Inquiry
1500W 1.5L Household Steamer Cleaning Machine Handheld High Pressure Steam Mop Cleaner
US$
29.30
-
30.50
500 Pieces
(MOQ)
Hand Held High Temperature Pressure Home and Car Steam Cleaner 1200W 450ml
US$
11.70
-
12.20
1,000 Pieces
(MOQ)
1500W 2L Stainless Steel Tank High Pressure Home Car Steam Cleaner Wj528
US$
29.30
-
30.50
500 Pieces
(MOQ)
1200W 450ml Handheld Cleaning Commercial High Pressure Temperature Steam Cleaner
US$
11.70
-
12.20
1,000 Pieces
(MOQ)
1/4
Olansi Healthcare Co., Ltd.
10 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
UV Air Purifier Smart Purifying Device Formaldehyde Removing HEPA Filter Cleaner for 2022
US$
196.00
300 Pieces
(MOQ)
Room Air Purifier or Air Cleaner with HEPA Filter High Absorpt Formaldehyde Benzene Comercial Portable
US$
85.00
-
100.00
100 Pieces
(MOQ)
Commercial Air Purifier Public Location Remove Formaldehyde HEPA UV Air Cleaner for Home
US$
185.00
300 Pieces
(MOQ)
Car Air Purifier Portable Using All Car Air Cleaner Remove Formaldehyde Microbes Clean Air
US$
15.00
-
25.00
10,000 Pieces
(MOQ)
1/4
Good Seller Co., Ltd
14 yrs
·
Trading Company
Send Inquiry
H13 Grade HEPA Negative Ion Air Purifier Sterilizes Removes Formaldehyde Cleaner
US$
7.38
-
7.43
30 Pieces
(MOQ)
Household Air Purifier Portable Anion Removal Formaldehyde Ultraviolet HEPA Filter
US$
4.12
-
4.14
50 Pieces
(MOQ)
Desk Top True HEPA Home Household UV Light Portable Air Purifiers
US$
8.35
-
8.39
10 Pieces
(MOQ)
Portable Aroma Diffuser True HEPA and Pm2.5 Home Air Purifier
US$
8.35
-
8.39
10 Pieces
(MOQ)
1/4
Shandong Xishui Building Materials Co., Ltd
16 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Concrete Additive Calcium Naphthalene Sulfonate Water Reducer, Metal Surface Cleaner
US$
800.00
-
900.00
28 Tons
(MOQ)
Food-Grade Sodium Gluconate, Industrial Glucose Cleaner, Water Treatment Scale Inhibitor
US$
540.00
-
570.00
27 Tons
(MOQ)
Sodium Gluconate Industrial-Grade Metal Cleaner, Concrete Additive, Sewage Treatment
US$
540.00
-
570.00
27 Tons
(MOQ)
Produce Sodium Gluconate, a Metal Surface Cleaner and a Concrete Water Reducer
US$
540.00
-
570.00
27 Tons
(MOQ)
1/4
Foshan Shunde Kinglei Environment & Technology Co., Ltd.
15 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Air Cleaner 3-in-1 True HEPA Replacement Filter Features Ah13 True HEPA Filter, Honeycomb Activated Carbon
US$
7.99
-
20.10
100 Pieces
(MOQ)
Air Cleaner Filters Vf4000 Replacement HEPA Filter for Shop VAC Wet Dry Vacuums
US$
6.99
-
16.60
100 Pieces
(MOQ)
H13 HEPA Activated Carbon Filter Chinese Factory
US$
8.00
1,000 Pieces
(MOQ)
Filter Replacement 3-in-1 HEPA and Activated Carbon Cylinder Filter Air Purifier Filter Parts
US$
4.99
-
15.60
100 Pieces
(MOQ)
1/4
Shanghai Lanyou Lighting Co., Ltd.
6 yrs
·
4.9
Send Inquiry
Wet Dry Industrial Car Vacuum Cleaner
US$
250.00
-
450.00
10 Pieces
(MOQ)
1/4
Yueqing Ruihua Cabinet & Whole Set Equipment Co., Ltd.
21 yrs
·
5.0
·
Manufacturer/Factory
Send Inquiry
Newest Design Adustable Easy Use Car Engine Carbon Cleaner
US$
34.15
-
35.15
1 Piece
(MOQ)
Kw-300 Ozone Home Air Cleaner
US$
30.77
-
32.77
1 Piece
(MOQ)
Factor Sales OEM Easy Use Ozone Air Cleaner Ozonzier
US$
95.77
-
97.77
1 Piece
(MOQ)
High Quality Hot Sale Fashion Design Air Cleaner
US$
30.77
-
32.77
1 Piece
(MOQ)
1/4
Xuyi Suyuan Technology Co., Ltd.
11 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
Negative Ion Air Purifier, Sterilization, Seconhand Smoke and Formaldehyde Removal Pm2.5
US$
300.00
-
390.00
1,000 Pieces
(MOQ)
Solar Vehicle Air Purifier, Elimination of Formaldehyde Odor by Negative Ions
US$
10.20
1,000 Pieces
(MOQ)
Car-Mounted Car Gift Remove Formaldehyde Air Purifier
US$
11.80
1,000 Pieces
(MOQ)
USB Cylindrical Cleaner Lamp Aroma Function Removal Formaldehyde Car Air Purifier
US$
14.40
1,000 Pieces
(MOQ)
1/4
Dongguan Vionix Smart Tech Co., Ltd
Send Inquiry
Household Office Air Purifier Activated Carbon Negative Ion Technology Formaldehyde Odor Removal Aromatherapy RoHS Desktop
US$
83.58
-
84.88
1 Piece
(MOQ)
Home-Use Air Purifier for Formaldehyde Removal, Odor Elimination, and Indoor Dust Filtration with USB Connectivity
US$
83.58
-
84.88
1 Piece
(MOQ)
High Quality Quiet Electric Pet Hair Filter Smart WiFi Home Air Purifier Air Cleaner with Speaker for Room
US$
59.88
-
60.88
1 Piece
(MOQ)
Custom Logo HEPA Filter Air Purifier UV Sterilization Smart Control Portable Mini Air Cleaner for Car/Small Room/Desktop
US$
83.58
-
84.88
1 Piece
(MOQ)
1/4
Markevina Technology (Shenzhen) Co., Ltd.
5.0
Send Inquiry
Professional Pm2.5 Formaldehyde Odor Remover HEPA UV Air Purifier
US$
50.00
-
100.00
100 Pieces
(MOQ)
Professional Remover Air Purifier Humidifier for Pm2.5 Formaldehyde Odor
US$
80.00
-
100.00
100 Pieces
(MOQ)
Home Room Household Wall Mounted HEPA Filter UV Air Purifiers Cleaner
Negotiable
100 Pieces
(MOQ)
Portable Timer Mechanical Air Purifier Cleaner Disinfection Oxygen Ozone Generator
US$
90.00
-
120.00
1 Piece
(MOQ)
1/4
Jiangsu Shenxing Photoelectricity Medical Apparatus Co., Ltd.
26 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Customizable Air Purifier High Efficiency Filter Activated Carbon to Remove Formaldehyde Pm2.5 for Home
US$
185.00
-
240.00
1 Set
(MOQ)
Whole Sale Home HEPA Air Purifier with High Quality Imported Motor Remove Formaldehyde Pm2.5 Tvoc and Bacterial
US$
185.00
-
240.00
1 Set
(MOQ)
Home Office Small Portable Air Purifier with HEPA Filter and UV Sterilization Lamp
US$
180.00
-
210.00
1 Set
(MOQ)
Sk-Y30 Home Air Purifier HEPA Filter with Negative Oxygen Ion Touch Design Portable Air Cleaner UV
US$
180.00
-
210.00
1 Set
(MOQ)
1/4
Zhejiang Zhuoreixing Intelligent Technology Co., Ltd
Send Inquiry
Hand Free Fuction of Unpick and Wash Washing Device Vacuum Mini Commercial Cleaner
US$
40.00
-
50.00
1 Piece
(MOQ)
Intelligent Automatic Pumping-Washing-Spraying Steam Cleaner for Upholstery
US$
40.00
-
45.00
1 Piece
(MOQ)
Multi-Functional Pumping and Washing Floor Steam Cleaner with White
US$
10.00
-
11.00
1 Piece
(MOQ)
Safe Guaranteed Popular High Penetratance Domestic Steam Cleaning Machine
US$
10.00
-
12.00
1 Piece
(MOQ)
Guangzhou Xincheng New Materials Co., Limited
13 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Domestic Air Purifier Formaldehyde Remover with Reasonable Price From China
US$
105.48
-
155.48
10 Pieces
(MOQ)
Activated Carbon Plank Air Filter for Ventilation System Primary Filtration
US$
6.30
-
7.50
20 Pieces
(MOQ)
Photocatalyst Aluminum Honeycomb Filtration Net for Removal of Formaldehyde
US$
15.00
-
30.00
10 Pieces
(MOQ)
Mesh Activated Carbon Pleated Air Filter for Air Treatment Unit
Negotiable
20 Pieces
(MOQ)
1/4
Xinxiang North Filter Co., Ltd.
26 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Commercial Auto Smoke Formaldehyde Removal Device Large Room Fresh UV HEPA Negative Air Purifier Air Cleaner for Home Bedroom
US$
259.00
-
378.00
10 Sets
(MOQ)
HEPA Air Cleaner Multi-Filter Box Pm2.5 Puifying Anti-Virus for Indoor Air Quality
US$
47.00
-
49.00
1 Piece
(MOQ)
Air Cleaner with Ionizer Standing Room Purify Air with HEPA Filter Office Air Purifier
US$
256.00
-
375.00
10 Sets
(MOQ)
Purificador De Aire De Iones Negativos Plug in Air Purifier Purificador De Aire De Ozono Dehumidifier with Air Purifier Home
US$
256.64
-
375.87
10 Sets
(MOQ)
1/4
Cixi Beilian Electrical Appliance Co., Ltd.
16 yrs
·
Manufacturer/Factory & Trading Company
Send Inquiry
2023 Air Purifier Remove Smoke Formaldehyde Allergens Air Purifier with Negative Ions Bkj-90A
US$
226.50
-
248.20
100 Pieces
(MOQ)
Purifiers for Industrial Use with Super Purification
US$
1,229.00
20 Pieces
(MOQ)
Ykx-Y-1200 Floor Standing Air Purifier W/ High Cadr
US$
684.90
-
830.00
10 Pieces
(MOQ)
New Design Air Purifier W/ High Efficiency
US$
684.90
-
830.00
10 Pieces
(MOQ)
1/4
Nanjing Blue Sky Filter Co., Ltd.
17 yrs
·
5.0
·
Manufacturer/Factory & Trading Company
Send Inquiry
Portable Installation 6 Stages Filtration System Remove Formaldehyde Pm2.5 Voc Smoke Dust Home Ionic Air Purifier Ap-C230A
US$
100.00
-
200.00
10 Pieces
(MOQ)
Home Portable 6 Stages Filtration System Remove Formaldehyde Pm2.5 Voc Smoke Dust Ionic Air Purifier Ap-C230A
US$
100.00
-
200.00
10 Pieces
(MOQ)
6 Stages Filtration Intelligent Smoking Filter Pm2.5 Ionic Air Cleaner Remove Formaldehyde Home PRO Ionic Air Purifier Ap-C230A
US$
100.00
-
200.00
500 Pieces
(MOQ)
Green Cartridge HEPA Filter with Activated Carbon Formaldehyde Enhanced Version Replacement for Xiaomi Mi 1 2 2s Air Purifier
US$
5.50
-
9.90
200 Pieces
(MOQ)
1/4
FoShan Purecare Electric Technology Co.,Ltd
10 yrs
·
5.0
·
Trading Company
Send Inquiry
True HEPA Filter Room Air Purifiers Cleaning Air Formaldehyde Odors Dust Removal Certification CE/RoHS Air Purifier
US$
43.00
-
49.00
1 Piece
(MOQ)
Odor Smell Sensor Dust Remover HEPA Charcoal Filter Electronic Air Cleaner for Home
US$
39.00
-
43.00
1 Piece
(MOQ)
Factory Wholesale RoHS Certified Room HEPA Carbon Filter Air Cleaner with UV Light Sterilizer
US$
51.00
-
55.00
1 Piece
(MOQ)
Best Remote Control H13 HEPA Filter Negative Ion UV Home Air Cleaner for Dust
US$
53.00
-
59.00
1 Piece
(MOQ)
1/4
YIFEIPU (XIANGYANG) BIOTECHNOLOGY CO.,LTD
Send Inquiry
Formaldehyde Based Cleaner for Livestock Housing and Feed Areas
US$
260.00
-
400.00
20 Tons
(MOQ)
High Purity Kmps / Oxidizing Disinfectant for Shrimp Farming, Controls Pathogens & Algae, Improves Water Quality in Aquaculture Ponds
US$
1.00
-
3.50
25 kg
(MOQ)
Aquaculture Potassium Monopersulfate Compound Salt - Algae Removal & Water Quality Improver for Aquatic Breeding
US$
1.00
-
3.50
25 kg
(MOQ)
Potassium Monopersulfate Triple Salt (PMPS/ KMPS) Powder for Aquaculture Water Treatment, Shrimp Fish Crab Pond Disinfectant
US$
1.00
-
3.50
25 kg
(MOQ)
1/4
1
13
Hot Products
Air Cleaner
Ozone Generator
Car Air Purifier
Air Purifier
Air Sterilizer
Ozone Sterilizer
China Ionizer
Portable Air Purifier
Related Manufacturers & Supplier
Ozone Air Purifier Factories
Melamine Formaldehyde Factories
Formaldehyde Glue Factories
Formaldehyde Test Factories
Formaldehyde Resin Manufacturers
Ozone Water Purifier Manufacturers
Negative Ion Generator Manufacturers
Ozone Generator Air Purifier Manufacturers