Health
Launched for the first time in the world: Condoms for both sexes
Mr. John Tang Ing Chinh, a Malaysian gynecologist, has made a condom using a transparent thin film material with high elasticity and good water resistance, which can be…
John Tang Ing Chinh
Browse ScienceInfo articles and explainers related to John Tang Ing Chinh.
Topic archive
Articles about John Tang Ing Chinh
1 published item.