Which selling method is most likely to irritate potential customers?

Copan italia is a distributor of laboratory products and manufacturer of laboratory commodities, including transfer pipettes and flexible hematology cups used on a variety of automatic instruments to count blood corpuscle elements. copan's says that the company's business is to continually work to improve the quality of the collection and preservation of the microbiological sample in the "pre-analytical phase," as the demand for better protection of the specimen is growing day by day.