In many cases we find the request from commercial side to be able to offer the same in Ex. Few examples:
Ex insect trap
II 2GD EEx em II T4 (Zone 1 & 2 for gas, zone 21 & 22 for dust)
Ex smart watch
Ex marking as follows:
Not intended for use in hazardous areas
Many interesting applications. If any value on market, it will come with time.
Keep up good work!