Free cleaning for life. According to the official website of Oppein Cabinets, Oppein Cabinets are products of Oppein Home Furnishing Group Co., Ltd., which was established in 1994. The products of this brand have complete after-sales service, cleaning three times a year and free cleaning for life. Provide customers with six free services including cabinet exterior cleaning, range hood cleaning, accessories cleaning, countertop maintenance, drain inspection, and daily maintenance introduction.