I purchased the WNPS-100A, the 30L, most powerful option in the listing. Primarily, I'll use it for cleaning laptop motherboards and electronics. It's priced at 25% of other brands I've seen. It functions properly, cleaning and heating as expected. However, the display doesn't show numbers accurately (refer to photos). The seller requested an extra $60USD after I'd already paid for the purchase and shipping, affecting my rating. Honesty about pricing in the listing is crucial. I will buy this product from this seller again when I need additional units.

very good quality and good services informations and delivery like it was said since the beginning ! perfect supplier