A:Our coils will effect within 1 minute and 10 colis for 10hours.
2. Q:Is it harm to human?
A:Please keep ventilation and it will be not harm to human.
3. Q:Is the tray enough firm to hold the coils?
A:The tray is our patiented product and we have tried many times,it is enough firm to hold the coils.
Usage Section :