Estimated delivery time may vary due to the following:
Your shipping address.
Selected shipping carrier.
Date of confirmed payment.
Seller's processing time on item customization.
Order status can be shown at your Buyer Center.
Vibration 20 to 500Hz 4hrs per X-Y-Z axis , sinusoidal vibration 30Hz rms 30mins per X-Y-Z axis
enviornment test :GB/T2423.1-GB/T2423.4