MCH Chemistry Help

Your License does not expire

Once the eBook is installed on your device, the license NEVER expires. After registration, Internet access is NOT required.

Device crash

If your device crashes, MCH can provide a new license key for activation after your device is replaced or repaired.  There is a small fee for this to cover our costs.

Second Device

If you wish to have the eBook on a second device, we can do this for a small fee to cover our costs.

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