The Jeweler’s Board of Trade (JBT) Published on: 22/08/2021 by Ben Vongsrisart - Royi Sal Jewelry becomes a member of the JBT (The Jeweler’s Board of Trade). Jewelers Board of Trade (JBT) operates as a nonprofit trade association. This association represents the jewelry industry. JBT acts as a lobbying group and communications network. As a member, Royi Sal created the trustworthiness through the transparency, and the business information disclosure to our viable business partners.