Residential, office and operating in my eyes is not a serious supplier. I got in the mixed selection only 2 Marshal Office products, the remaining 8 pins are from a different provider. In addition, these are much smaller and have lower quantities and different strengths. The product itself, I rate it with 2 stars because me the color intensity appears to pale. The wiping works perfectly, however. Greeting
Update 12/06/14: After the incorrect delivery at the beginning, was as promised a free replacement offered me and promptly delivered. I reckon the seller residential, office and operating at high, so I abändere the review as promised accordingly. The product itself, I rate nevertheless, still with 2 stars, because my color intensity with glass boards appear too pale.