About Us

We research and develop adhesive barrier film technologies to create innovative, quality and affordable medical devices.

Founder Dr John Tang signing a Memorandum of Understanding with the University College of Technology, Sarawak (UCTS) to facilitate collaboration in research and development.

Our company, Twin Catalyst Sdn Bhd, was founded by Dr John Tang (FRCOG), a consultant Obstetrician & Gynaecologist, and was set up in 2013 to develop and manufacture novel medical devices. We are ISO 13485 certified and are an MDA registered manufacturer in Malaysia. We have been awarded several Malaysian federal innovation grants for research and development. Through said research and development, we have developed the world’s first and only three-dimensional adhesive barrier dressing/condom. It is made of breathable polyurethane film, making our products strong, inert, ultra-thin, and water-proof.

For now, our products include Wondaleaf Adhesive Pouch, Wondaleaf Cap Condom, and Wondaleaf Unisex Condom.

The journey has been long but exciting. We are  committed to the vision of providing innovative and affordable products that contribute positively to the provision of medical services to all.


We'd love to hear from you! Let us know if you would like to place an order, or if you have any feedback or partnership ideas.