American Pulverizer Company

What American Pulverizer Company does

American Pulverizer Company, headquartered at 1319 Macklind Avenue in St. Louis, Missouri, is a privately held industrial manufacturer founded in 1908 that designs, engineers, and builds heavy-duty size-reduction equipment. The company operates a 100,000-square-foot campus comprising a 10,000-square-foot office, a 30,000-square-foot fabrication shop, and a 60,000-square-foot machine shop equipped with CNC boring mills, lathes, and horizontal machining centers. Its product portfolio spans hammermills (automobile, aluminum, reversible, laboratory, fine grinding), ringmills, a wide array of crushers (double roll, jaw, single roll, vertical shaft turnings, glass, rolling ring turnings, pick and roll, ACC/S/WC-WS/20/ACR series), granulators (standard and heavy scrap-duty), wood hogs (top feed, horizontal feed, Boss Auger), impactors (horizontal shaft, vertical shaft, reversible), shredders (TRS low-speed high-torque, DRAS pre-shredder, Mono-Shear single-shaft, 60 Series, 48x50), grinders (cocoa, clinker), lump breakers, frozen crackers, trommel screens, paper shredders, and portable systems, plus complete integrated shredding systems for automobiles, ferrous scrap, aluminum, wood pallets, firearms, and ASR recovery. Proprietary technology includes the exclusive rolling ring design that reduces by impact rather than sharpness and deflects from tramp metal, DHT differential heat-treated hammers delivering up to 50% more wear versus standard 8620 cast steel, and TRS Series low-speed high-torque shredder gearboxes delivering the highest torque values in the industry at lower speeds and reduced horsepower. The company is the parent of Hustler Conveyor Company (acquired in 1979 as Iron Hustler Company), which supplies conveying and separation integration for complete systems.

The business operates three revenue streams. The first is direct equipment sales via a direct enterprise field sales team reachable through a 24-hour contact line and a website inquiry form that collects application specifications; pricing is quote-based with no public list prices. The second is a parts and services stream covering bearings, pillow blocks, end discs, spiders, DHT hammers, rotors, custom pillow blocks, field installation, emergency rotor rebuilds, and consulting, supported by a stocked inventory of over $1 million in wear parts and a pre-sale material testing laboratory. The third is an in-house equipment financing arm offering Application-Only and Full Financial lease and loan programs that serve buyers from family-owned companies through Fortune 500 firms in the United States, Canada, and South America. Marketing leverages a content-rich website, a YouTube channel with machine-in-action video, a LinkedIn presence for B2B engagement, and active participation in industry trade shows including ReMA conventions, the Energy Progress & Innovation Conference, the West Virginia Coal Show, Scrap Expo, and Recycling Market Roundtables.

The customer base spans four vertical segments: (1) scrap metal processors and recyclers (primary) handling ferrous and non-ferrous scrap including automobile shredding, white goods, clip and sheet iron, and firearms; (2) the mining and power industry for coal crushing and preparation plants; (3) the wood processing industry for pallets, biomass, and wood waste; and (4) waste processing and environmental services handling ASR, plastics, tires, medical waste, and construction/demolition debris. The company serves a global customer base. No financial statements, ownership structure, headcount disclosure, or revenue figures are publicly available; the company maintains no app products, no public API or SDK, no AI/ML capabilities, no disclosed patents, and no disclosed funding history, operating as a privately held corporation with no institutional or venture capital backing visible in the provided materials.

Name

American Pulverizer Company

Legal name

American Pulverizer Company

Website

https://ampulverizer.com

Company type

Private

Founded year

1908

Operating status

Operating

Headcount range

11–50 employees

Short description

American Pulverizer Company, founded in 1908 in St. Louis, Missouri, manufactures heavy-duty industrial shredding and size-reduction equipment, including hammermills, ringmills, shredders, crushers, and complete integrated systems, serving scrap metal recyclers, mining operators, wood processors, and waste handlers globally through direct enterprise sales, parts services, and in-house equipment financing.

Ownership category

akta.pro rank

Product category

Industrial Size Reduction and Shredding Equipment

NAICS

Agriculture, Construction, and Mining Machinery Manufacturing (3331), Material Handling Equipment Manufacturing (33392), Construction Machinery Manufacturing (333120)

SIC

Construction, Mining & Materials Handling Machinery & Equip (3530), General Industrial Machinery & Equipment (3560), Refuse Systems (4953)

akta.pro primary industry

Industrial Waste Handling & Compaction Equipment (Balers, Compactors) (IMAHALAI)

akta.pro secondary industries

Bulk Solids Handling & Processing Equipment (Conveying, Silo, Feeders) (IMAHAEAG), Demolition Equipment (Breakers, Crushers, Shears) (IMAHAAAL)

Keywords

• Size reduction equipment
• Industrial shredding machines
• Scrap metal processing
• Hammermills and ringmills
• Crushing and grinding equipment

Headquarters

HQ city

St Louis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Infrastructure, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Equipment Sales: Sale of heavy-duty shredding, crushing, and grinding equipment including hammermills, ringmills, shredders, crushers, impactors, and complete systems. Equipment ranges from laboratory-scale to industrial-scale with custom capabilities.
2. Parts and Services: Sale of spare parts including hammers, grates, bearings, pillow blocks, end discs, and custom components. Services include fabrication, machining, assembly, rotor repairs, field service, installation, and consulting.
3. Equipment Financing: American Pulverizer Company Financing offers Application-Only and Full Financial programs with competitive fixed-payment lease and loan structures for new and used equipment purchases. Available to customers from family owned to Fortune 500 companies.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

American Pulverizer Company manufactures heavy-duty industrial size-reduction equipment including hammermills, ringmills, slow-speed high-torque shredders, knife choppers, impactors, trommel screens, and jaw crushers for processing ferrous and non-ferrous scrap, coal, wood, tires, and waste. The company delivers standalone machines, complete integrated systems (incorporating conveyors, magnets, and eddy current separators via subsidiary Hustler Conveyor Company), spare parts, rotor repair services, testing facilities, consulting, and in-house equipment financing.

Product overview

American Pulverizer Company is a manufacturer of industrial shredding and size-reduction equipment established in 1908, headquartered in St. Louis, Missouri. The company offers a broad portfolio of core products organized into categories: Mills (Hammermills including Automobile, Aluminum, Reversible, Laboratory, and Fine Grinding; Ringmills), Crushers (Double Roll, Jaw, Single Roll, Vertical Shaft Turnings, Glass, Rolling Ring Turnings, Pick & Roll, 20 Series, ACC Series, S Series, WSR Series, ACR Series, WC/WS Series), Granulators (standard and Heavy Scrap-Duty), Wood Hogs (Top Feed, Horizontal Feed, Boss Auger), Impactors (Horizontal Shaft, Vertical Shaft, Reversible), Shredders (Low-Speed High-Torque TRS Series, Pre-Shredders DRAS, Single-Shaft Mono-Shear, 60 Series, 48x50), Grinders (Cocoa VFG Series, Clinker Grinder CG Series), Lump Breakers (SRLB Series), Frozen Crackers (FCC Series), Trommel Screens, Paper Shredders (VSP Series, CP Series), and Portable Systems (High-Torque and Hammermill). The company also provides complete integrated systems for specific applications (Automobile Shredding, Ferrous Shredding, Aluminum Shredding, ASR Systems, Wood Pallet Shredding, Firearms Shredding, Clip & Sheet Iron), along with services including 24-hour support, testing facilities, spare parts, rotor repairs, custom pillow blocks, consulting, surplus equipment sales, and equipment financing. A wholly owned subsidiary, Hustler Conveyor Company, provides conveying systems integration.

Differentiator

Problem solved

Functional benefit

Products and services

• Automobile Hammermill Shredder Heavy-duty hammermill shredder designed for automobile crushing reduction, ranging from 60 series (20-70 TPH) to larger models like 80x104, 98x104, and 130x118 (up to 250 TPH). Features capped spiders, self-supporting grates, reject doors, and hydraulic pin pullers.
• Aluminum Hammermill Shredder Hammermill shredder that reduces aluminum scrap (cans, transmission housings, casts, clips, extrusions) to magnetically separated purity of 99.6% or more with minimal maintenance.
• Hammermill Flexible hammermill offering uniform reduction with reversible hammers, available in various materials (cast manganese, alloy steel, white iron, high alloy plate). Features heavy-duty rotors and self-aligning pillow blocks.
• Reversible Hammermill Reversible hammermill ideal for reducing foundry slag, cement rock, silicon carbide, potash, limestone, bentonite, coal, coke, alumina, salt cake, fire brick, ores, glass frit, and mill scale. Features access doors, heavy-duty plate steel weldments, and 4150 heat-treated alloy forged main shafts.
• Laboratory Mill Laboratory-scale mill built for pilot plant and small-scale applications, providing uniform crushing from organic and inorganic materials including chemicals, coal, pigments, foods, clay, and fibrous materials.
• Fine Grinding Mill Fine grinding mill combining economy and capability to produce fine end products with capacities from 6 standard models plus custom sizes. Applications include clay, limestone, phosphates, wood chips with output down to -100 mesh.
• Ringmill Ringmill utilizing exclusive rolling ring design for efficient material reduction to uniform size. Rings rotate freely on shaft and deflect from tramp metal, with reversible rings for double wear life.
• Double Roll Crusher Double roll crusher for primary and secondary reduction of ROM coal, washed coal, middlings, screenings, slag, moist clay, limestone, cement, potash, rock, sulfur, lignite, pyrite. Features hydraulic adjustment of crushing rolls and relief springs for tramp metal protection.
• Jaw Crusher Affordable alternative in new crushing equipment with single wall stress-relieved steel main frame, reversible manganese jaw dies, large spherical self-aligning roller bearings, and hydraulic or manual shim adjustment.
• Single Roll Crusher Single roll crusher designed for heavy-duty primary and secondary reduction of ROM coal, middlings, screenings, and re-crushing with high tonnage capacities. Features ribbed steel frame, spring-loaded breaker plate, and low operating cost.
• Vertical Shaft Turnings Crusher VS Series vertical axis crusher for handling nearly every kind of scrap including large tangled bundles of turnings. Features gravity-fed vertical feed, self-contained design, and inspection/access doors.
• Glass Crusher GC Series glass crusher designed to be mounted at end of conveyor belts to crush glass for volume reduction. Features reversible blow bars that swing freely.
• Rolling Ring Turnings Crusher Rolling ring crusher designed to reduce metal turnings to smaller particles for better handling, salvage, and oil removal. Features automatic apron to eject tramp metals and handles carbon/alloy steel, aluminum, brass, and bronze turnings.
• Pick & Roll Crusher Pick and roll crusher handling needs from caked chemicals and waxes to asphalt and dry ice. Features simple construction, minimal maintenance, less horsepower, and various screen plates for finished-product sizing with minimum fines.
• 20 Series All Purpose Crusher All-purpose crusher for capacities above laboratory mills and below large-scale operations. Used for reducing coal, chemicals, ceramics, minerals, glass, metals, and miscellaneous products. Available in 4 sizes with various options.
• ACC Series Rolling Ring Crusher ACC Series Rolling Ring Crusher in many sizes designed to be operator friendly and easy to operate. Features rib-reinforced rigid housing, sectionalized design, heavy rotor design, and advanced breaker grate design.
• S Series Rolling Ring Crusher S Series Rolling Ring Crusher ideal for ROM, middlings, and mine refuse applications with high tonnage capacity and excellent size control. Features exclusive rolling ring design with reversible rings and low maintenance.
• WSR Series Reversible Impactors WSR Series Reversible Impactors and Hammermills for primary and tertiary crushing of materials and minerals such as limestone, potash, coal, gob, petroleum coke, fertilizers, clay, shale, and dross. Achieve high reduction ratios with product as fine as 8-mesh.
• ACR Series Crushers ACR Series Reversible Hammermills and Impactors ideal for reducing coal, coke, foundry slag, sand, cement rock, silicon carbide, potash, limestone, alumina, salt cake, fire brick, ores, glass frit, and mill scale.
• WC & WS Series Crushers Medium-size crusher series developed for adaptability to many purposes. WC and WS Series machines differ primarily in size and capacity. Applications include chemicals, minerals, ceramics, metals, and miscellaneous materials.
• Granulators Granulators for shredding and granulating plastic recycling, scrap rubber, pre-shredded tires, phone cable, and polymeric materials. Feature high-speed turning rotor knives and fixed adjustable stator knives.
• Heavy Scrap-Duty Granulators Heavy scrap-duty granulator for high-demand processing of wire, cable, plastics, rubber, pre-shredded tires, and polymeric materials. Features pivoting upper housing, reinforced steel plate frame, and multiple rotor designs with chrome-vanadium heat-treated tool steel knives.
• Top Feed Wood Hog WBH series Top Feed Wood/Bark Hogs available in 30-60 inch diameters with widths from 36-104 inches. Capacities range from 1-150 TPH depending on material, infeed size, and finished product size. Features heavy-duty spherical roller bearings and hydraulic housing opening option.
• Horizontal Feed Wood Hog High-speed horizontal feed wood hogs for processing wood trim, edgings, blocks, and slabs. Available in 24, 36, and 48 inch rotor diameters with varying widths based on capacity and sizing required.
• Boss Auger Shredder Low horsepower, low maintenance, high volume shredder for wood waste including log ends, green waste, pallets, scrap lumber, railroad ties, construction/demolition waste. Generates over 320,000 lbs of thrust and 75,000 ft-lbs of torque with auto reverse feature.
• Horizontal Shaft Impactor SRI Series primary and secondary impactor available in 20 sizes with rotor dimensions from 12-72 inches. Throughput capacity varies from 25-1000 TPH depending on model. Accepts feed sizes up to 24 inches and generates cubical product from 0 to 4 inches.
• Vertical Shaft Impactor VSI impactor offering consistent product gradation and cubical shaped product from marginal material. Features flange mount rotor shoe, 4010 forged heat-treated oversize rotor shaft, and modular oil lube system.
• Reversible Impactor Reversible impactor allowing up to double the life with close control of product size and cubical shape. Handles high tonnage with large first-stage impact area and easy maintenance. Adaptable for clays, shales, ores, minerals, coal, limestone, cement rock.
• Low-Speed High-Torque Shredder (TRS Series) Low-speed high-torque shredders delivering highest torque using lower speeds with least horsepower. Ideal for municipal solid waste, hot water heaters, plastic, aluminum/ferrous scrap, wood, cable, tires, hazardous waste. Sizes from 14x20 inch opening (5 HP) to 105x72 inch (1,000 HP).
• Pre-Shredder (DRAS Series) Pre-shredder designed to rip bales of scrap into pieces for secondary hammermill reduction and liberating. Slow speed ensures minimum fines generation. Also ideal for aluminum products including sheet and UBC.
• Single-Shaft Shredder (Mono-Shear) Single-shaft shredder with solid forged one piece rotor (limited lifetime warranty), high-quality tool steel cutters, two-speed hydraulic process ram, PLC controls with graphic and LED monitoring, and drop down cage for easy screen replacement.
• 60 Series Shredders 60 Series shredders (60x50, 60x60, 60x85, 60x90) designed for today's scrap processor handling high capacities of miscellaneous sheet iron, auto bodies, white goods, light #1 and #2 scrap materials. Features capped spider rotors, heavy-duty self-supporting grates, and hydraulic pin pullers.
• 48x50 Shredder New and improved 48x50 shredder for processing turnings, clips, cast material at higher throughput levels. Features hydraulic retractable cage, machined housings, 20% more inertia, and cast steel spiders with renewable caps.
• Cocoa Grinder (VFG Series) VFG Series Cocoa Grinder specially developed to reduce lumps of cocoa cake to 99.7% passing 200-mesh size with capacity of 1500-2500 pounds per hour. Features plate beater system against triangular-ribbed grinding track.
• Clinker Grinder (CG Series) CG Series Clinker Grinder reduces clinkers from 2-16 inch feed size at temperatures up to 600 degrees F. Features 5-40 HP, 5-30 tons per hour capacity, single or double-roll design with ni-hard steel teeth.
• Lump Breakers (SRLB Series) SRLB Series Lump Breakers ideal for reducing borax, clinkers, coal, cullet, bottles, chemicals, resins, particle board, plastic purgings, sugar, salt, sludge cake, and agglomerated materials. Available in 12, 18, and 24 inch dimensions.
• Frozen Crackers (FCC Series) FCC Series Frozen Crackers designed to handle high volume of rain, sleet, snow, or moisture-frozen coal and limestone directly from rail cars or open storage. Features wide intake/discharge openings and ratchet-adjustable breaker plate.
• Trommel Screens Heavy-duty trommel screens designed to size and classify materials such as municipal solid waste, construction debris, turnings, demolition lumber, and ferrous/non-ferrous scrap. Diameters from 3-12 feet with lengths from 10-60 feet.
• Vertical Shaft Paper Shredder (VSP Series) Vertical Shaft Paper Shredders operating at 1/3 rotor speed of conventional hammermills for high productivity and low maintenance. Processes slab waste, butt rolls, trim, newsprint, books, magazines, corrugated, coated papers. Capacities from 1-10 tons per hour.
• CP Series Paper Shredder CP Series Large Volume Paper Shredders for rugged, versatile, dependable shredding of slab waste, newsprint, signatures, corrugated, loose wound rolls, broke, butt rolls, books, magazines, coated and layered papers. Capacities of 1-30 TPH with low horsepower and low maintenance.
• Portable High-Torque Shredder Portable low-speed high-torque shredding system for moving operations between jobsites. Includes diesel engine, infeed conveyor or grapple, take-away conveyors, hydraulic power pack on flat bed trailer for processing scrap metal, wood, plastic, tires, paper.
• Portable Hammermill Portable hammermill unbeaten in capacity and flexibility for variation in feed materials including wood waste, packing materials, railway sleepers, household/industrial/commercial waste. Finished products 0-50mm or 0-500mm with reject door for uncrushable objects.
• Eddy Current Separators Eddy Current Separators in heavy-duty and extra heavy-duty models with belt widths from 36-80 inches. Ideal for auto shredder residue, electronic scrap, aluminum cans. Features balanced sealed rotor, high grade rare earth magnets, adjustable splitter chute and belt speed.
• Pre-Ripper Pre-ripper that shreds complete automobile including frame, axles, front/rear ends, drive shaft, springs, differential in under 1 minute. Uses differential speed with pierce and tear shredding with low power requirements and automatic grease/oil lubrication.
• Automobile Shredding Systems Complete automobile shredding systems with design, engineering, and construction capabilities. Includes infeed/takeaway conveyors, magnets, eddy current separators through wholly owned subsidiary Hustler Conveyor Company.
• Ferrous Shredding Systems Heavy-duty ferrous scrap shredding systems for automobiles, clip and sheet iron, white goods. Complete systems with conveyors, magnets, trommel screens, eddy current options, air knife, metal sort, poker picker ejection, water injection system.
• Clip & Sheet Iron Shredding System Heavy-duty scrap shredding systems for clips and sheet iron processing with dependable long-lasting equipment backed by over 100 years of experience.
• Aluminum Shredding & Separation System Top performance aluminum shredding and separation systems with oscillating conveyors, rubber belt conveyors, screen for dust removal, and double magnetic separators for finished product removal.
• Complete ASR System Complete Automobile Shredder Residue (ASR) recovery systems with center-feed high-speed hammermill for higher metal recovery percentage to address landfill costs and stockpiled ASR.
• Wood Pallet Shredding System Complete systems that reduce wood pallets to mulch type product using Wood Hogs in many sizes to meet specific requirements.
• Firearms Shredding System Gun shredder systems utilizing TRS Series Low-Speed High-Torque Shredder for simple and secure disposal of firearms and weapons including revolvers, pistols, AK-47s, knives.
• 24-Hour Contact Service Full 24-hour service support with contact information for Sales (James Holder Ext. 132) and Parts (Roger Hershey Ext. 131).
• Testing Facility Testing laboratory that determines machine size, horsepower, RPM, and screen/grate size recommendations before order placement. Analyzes customer material samples and sends finished product samples for approval.
• Spare Parts Spare parts including bearings, pillow blocks, end discs, spiders, shafts, front wall castings, DHT hammers (up to 50% more wear), with customer inventory programs at no charge.
• Rotors & Repairs Emergency rotor rebuilds using three CNC lathes, CNC boring mills for machining center discs, end discs, spiders, with high capacity cranes and strict interference fit requirements.
• Custom Pillow Blocks Custom machined pillow blocks made from solid cast steel for customer capacity specifications, with options for vibration switches and thermocouple.
• Consulting Professional consulting services with wide variety of knowledge and skills for high demanding consulting and strategy planning needs. Evaluates new and current applications for job specific solutions.
• Surplus Equipment New and used surplus equipment including Portable TRS 72x72 Shredder, KM MC1 Vertical Mill, welding positioners, Eriez Cross-Belt Magnet, gear boxes.
• Financing Equipment financing with Application-Only and Full Financial programs, competitive fixed-payment lease and loan structures for family owned to Fortune 500 companies in US, Canada, and South America.

Quantifiable outcome

• Up to 50% more wear life with DHT hammers compared to standard 8620 cast steel
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Hustler Conveyor CompanycoreStrategic or Co-development Partner · 1 January 1979Acquired in 1979 as Iron Hustler Company and renamed Hustler Conveyor Company. Now a wholly-owned subsidiary of American Pulverizer Company. The combination creates two companies that can work either together or separately to meet equipment needs of scrap processors and other recyclers, enabling complete crushing, shredding, and conveying systems.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• TerraSource Global (Jeffrey Rader brand): Manufactures crushers, hammermills, and material handling equipment under the Jeffrey Rader, Gundlach, and Pennsylvania Crusher brands. Comparable in industrial crushing/sizing product lines and heavy-industry customer base.
• UNTHA Shredding Technology: Global manufacturer of industrial shredders and size-reduction systems for waste, wood, and recycling. Comparable in low-speed high-torque shredder technology and municipal/industrial waste processing applications.
• Vecoplan: Manufactures industrial shredders and processing equipment for plastics, wood, paper, and recycling applications. Comparable in industrial shredding technology and verticals like wood/biomass processing and waste recycling.
• Granutech-Saturn Systems: Produces industrial shredders, granulators, and reduction equipment for tires, scrap metal, and waste streams. Directly comparable in size-reduction product offering and end-market focus on recycling and scrap processing.
• SSI Shredding Systems: Designs and manufactures industrial shredders and size-reduction equipment for scrap metal, MSW, and recycling applications. Directly comparable product portfolio (hammermills, rotary shear shredders) and overlapping customer base of scrap processors and recyclers.
• Williams Patent Crusher & Pulverizer: Family-owned manufacturer of industrial mills, crushers, shredders, and pulverizers for mining, minerals, and waste applications. Highly comparable privately-held specialty industrial machinery manufacturer serving similar end markets.
• Shred-Tech: Manufacturer of shredders and size-reduction systems serving waste management, recycling, and industrial markets. Closely comparable in product category (industrial shredders) and target customers (municipal and industrial waste processors).
• Stedman Machine Company: Family-owned manufacturer of size-reduction equipment including hammermills, impactors, and crushers. Directly comparable specialty industrial equipment maker serving aggregate, mining, and recycling end markets.

Emerging players

• Prater Industries: Manufactures particle size reduction and separation equipment including hammermills and air classifiers. Partially overlapping with APC in industrial milling/reduction product lines, particularly for food, chemical, and mineral processing.

Broad incumbents

• Metso: Large global OEM of mining, aggregates, and recycling equipment including crushers and screening equipment. Overlaps with APC in industrial crushing/recycling but at much greater scale with broader product portfolio and global service network.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/americanpulverizer
• Facebookfacebook.com/americanpulverizer
• LinkedInlinkedin.com/company/american-pulverizer-company
• Xx.com/ampulverizer

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about American Pulverizer Company