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.