This document provides information on building materials and products offered by Day Ch Engineering, an ISO certified company. It lists various types of partitions, ceilings, ceiling tiles, prefab houses, raised flooring, insulation materials, roofing products, and wall cladding. Details are provided on gypsum boards, metal framing, grid systems, direct application plaster, fiber and mineral wool insulation, rubber for sound absorption, and colour coated and cement roofing sheets. Various branded products and specifications are mentioned. The company welcomes project requirements and positive responses.