The so-called OEM product refers to the products produced by the manufacturer with the production equipment with the customer's trademark brand according to the customer's requirements for the required products. Because the products are processed in foreign factories, customers have to bear the responsibility for the quality of the products, so the quality of the products cannot be guaranteed and it is very unstable.

Kelpolo Factory only makes antique tiles, while polished tiles and glazed tiles are manufactured by other factories, and by Zibo and Guangdong. Some netizens and insiders revealed that some products of the domestic well-known brand "Kelpolo" ceramic tiles also have the phenomenon of OEM production in different places. Some netizens said that this kind of brand-name ceramic tile with inconsistent appearance has really pitted consumers and damaged the image of these brand-name ceramic tile manufacturers. Some netizens also expressed concern about the quality of ceramic tiles: "Who will end these quality incidents? Kyle Poirot? Or are we consumers themselves? "