GUILD Gemstone Laboratory is composed of Mr Charles Carmona was founded in Los Ange-les in July 1980. For more than 40 years, GUILD Gem Lab has always been committed to theresearch, identification, science popularization and promotion of color gemstones, and hasrich experience and massive achievements in the field of building a standardized system inthe color gem market.
     Depending on the profound academic research background and a large number of researchon the origin of color gemstones and market identification data, GUILD Gem Lab has built anenterprise database covering all common gem categories in the market. Focus, accumulation,cohesion and breakthrough. From the start-up appraisal institution on the east coast of thePacific Ocean to the authoritative appraisal brand based in the Asia Pacific and radiatingaround the world, every development node of GUILD Gem Lab resonates with the internationalcolor gem industry on the same frequency.
       互诺科技公司成立为2005年，始终致力于在信息技术领域发展，是企业网络服务的推荐品牌。互诺客户群主要集中在中国大陆及港、澳、台等地区。互诺科技凭借创新的网站策划理念,精湛的网站制作技术,以及丰富的互联网营销经验，2005年至今已拥有客户20000多。
       互诺科技秉承以“提供更全面的互联网解决方案”为理念，自主开发出了一系列具有预见性，整合性的服务产品。帮助无数企业客户快速融入“互联网+”时代，获取网络高效益。
       用户经过长时间的咨询及比较，除了朋友的大力的推荐，互诺还提供众多的成功案例，大大增加了合作的信心，最终在众多网站建设公司中选择了互诺科技的网站建设服务