Yorktown industries is a GSA contracted vendor and manufacturer of computer printer supplies . long term GSA contracted we have serviced the US since 1952 Guarantees Our cartridges carry Life time Warranty · 30-day Satisfaction Guarantee - If you're not completely happy with your purchase, simply exchange or return it within 30 days. · Printer Replacement Guarantee: Exclusive! Yorktown products are manufactured to such exacting standards that if our product is verified as the source of any damage to your printer, we'll repair or replace the printer absolutely FREE.