Jointas Chemical is a leading sealant and industrial coatings manufacturer based in Guangzhou, China. Antas® is their sealant brand which has gained remarkable reputation since its introduction in 1989. China Construction Metal Structure Association has ranked Antas® among the best construction sealant brands for 14 consecutive years. Started as a private company, Jointas is now publicly listed in Shenzhen Stock Exchange – one of the few companies listed in the main stock exchange market out of the hundreds of sealant manufacturers in China.
Antas values its product quality and performance. ISO9001, ISO14001 and IATF 16949 quality systems are fully implemented by the company. The Jointas Testing Centre has been upgraded to CNAS standard and been following CNAS requirement for testings since 2018. The Centre officially became a CNAS accredited testing laboratory since 2020.
CNAS – China National Accreditation Service for Conformity Assessment – is the accreditation body member of International Laboratory Accreditation Cooperation (ILAC), International Accreditation Forum (IAF) and Asia Pacific Accreditation Cooperation (APAC).