Bangkok Assay Office Co., Ltd. (BAO) 1985 is the first company in Thailand, established since 1985 with prime intention to assist Thai Jewelry exporters.

Bangkok Assay has dedicated more than 20 years, We devote, search and create in order to accomplish the world standard of purity by utilizing our Thai technology and operating by Thai people to verify that Thailand has played as the important role in The combination of high nano technology and the elaborate craftsmanship resulted in the "Pure Gold" transforming Decorative-objects. With the modern and, approbated pattern which can be promoted as the masterpiece to be the gift of the worldthe world of adornment industry