Started in 1997, it is a company specializing in the adult health industry. Its product line covers many fields such as condoms, human lubricants, sex products, etc.

"Dolus" is responsible for marketing and after-sales service in China by Guangdong Chengmei Economic Development Co., Ltd., and is a gender health product brand under Chengmei Group. As a home health products operation company, Chengmei Group has always focused on creating a better life with safe and healthy innovative life products assistant consumers.

"DONLESS" condom was launched in China in 1997. It uses high-quality latex produced in Jiangsha, Malaysia and has been sold in China for 20 years. "DONLESS" global partner is a large-scale chemical industry company in the world. In 2004, Chengmei invested in Malaysia's GUMMITECH company and has 13 internationally-high-quality condom production lines, and has sales of chemical products and personal care products all over the world.

With the continuous improvement of consumers' sexual taste, in recent years, the Dulux product line has covered many fields such as condoms, human lubricants, sex products, etc., to meet consumers' increasingly diverse personal needs.