High Quality Content by WIKIPEDIA articles! NCH Corporation is a major international marketer of maintenance products, and one of the largest companies in the world to sell such products through direct marketing. NCH's products include specialty chemicals, fasteners, welding supplies, pet products, and plumbing parts. These products are sold through a number of wholly owned subsidiaries, many of which are engaged in the maintenance products business. Subsidiary companies in NCH's Chemical Specialties division produce a diverse array of maintenance chemicals that includes cleaners, degreasers, lubricants, grounds care, housekeeping, and water treatment products. Companies in the Partsmaster group offer a wide variety of items for maintenance and repair, including welding supplies and fasteners. The Plumbing Products Group provides plumbing supplies for the do-it-yourself retail consumer and the OEM market. The Retail Products Group markets a wide range of pet supplies. Other subsidiary...