Sam Sum Property (ซำ ซำ พร็อพเพอร์ตี้ in Thai) is a small Thai developer with almost no public footprint: we could find no official website and no projects other than one. That project is The Axis Pattaya on Thappraya Road in Nong Prue, near Pratumnak Hill. Details of the building vary between sources: some describe a single 20-storey block of 282 units completed in 2013, others two buildings with 430 units completed in 2014.
With a developer this private, the building has to be judged by how it is run. If you are buying at The Axis, ask the juristic person for its financial statements, fee collection rate and sinking fund balance, and find out when the pool and lifts were last overhauled; for a building more than ten years old these are the key questions. Also confirm the actual number of buildings and units from the documents, since that determines the foreign quota and how many neighbours you will compete with when letting or reselling.