Sumbawa Engineering Testing provides various engineering testing services for soils, aggregates, concrete, asphalt, and construction materials. They conduct in-situ and laboratory tests including standard penetration tests, vane shear tests, pressuremeter tests, permeability tests, density tests, California bearing ratio tests, and plate bearing tests. The company also offers field investigations like cone penetration tests, electrical cone tests measuring pore water, shallow and deep soil borings, and geotechnical monitoring services.