No.1 in Rear-View Mirrors - market share - Murakami -

The hydrophilicity function processing is given to the left half of the mirror, and the right half is a usual mirror.

When rain drops accumulate on a normal rear-view mirror, the driver suffers from decreased visibility. Our HCM mirrors solve this problem by transforming the many distortive water droplets into a single optically consistent film of water. Our special hydrophilic coating spreads this film of water evenly over the entire mirror surface resulting in improved visibility. 

To better design our external rear-view mirror products we test them using our in-house wind-tunnel. Using this wind-tunnel our engineers can optimize their designs, ensuring that the images they reflect are as stable and precise as possible.
Our wind-tunnel is capable of simulating wind speeds up to 260km/h and allows our engineers to isolate their designs and tests from other environmental factors. This empowers our engineers to run a broad range of tests and simulations and gives them the ability to make precise observations and measurements time and again.
Our investment in this and other testing facilities results in the development of the world’s best rear-view mirror products.