Original sentence: According to WeWOOD, the company plants a tree for every watch sold.As of December 2013, the company has planted 250,000 trees in the US and other countries where the watch is sold
Edited sentence: As of December 2013, the company had planted 250,000 trees in the US and other countries where the watch is sold.In the initial phases of working on the watch design, the company found its test groups by tracking the way the watches they sold fared in different climates and locations.WeWOOD promises to plant one tree for every watch they sell