Product review (5 stars): Hard item to find and it works
Humidity is an issue living near the Gulf of Mexico.  My air conditioner and dehumidifier were not getting the relative humidity (Rh) down to 30%.  Storage in pelican cases required drying out my silica gel packs about every other month to keep the humidity in case below 40%Rh. Of course, if I never opened them, the humidity and silica would not require as much maintenance. So I thought I would give a dry cabinet a try.  They all seem to be sold out of Southeast Asia (Taiwan and China).  This one was advertised as a product by TWAIPO.  AIPO is the manufacturer of the dry boxes this supplier sells.  The dry box delivered has the brandname Abmcdc.  It has the same product code so I think it is the same.
The item has two shelves made of pierced thick plastic.  Two removable linings for the shelves are provided: flat grey foam and a sculpted foam for lenses.  There is an additional piece of foam that is for the base of the cabinet.  The item comes with instructions but they are mostly useless unless you can read what I think is Chinese.  Possibly something I need to learn for the future.
The item arrived in via USPS in a sturdy cardboard box with straps. Packed well, the movement from Chaoyang District, Beijing China caused the shelves to shift.  This resulted in minor breakage of the front corners of the shelves.  Given the great distance that the item traveled and the difficulty in finding dry boxes in the US, I decided to superglue the pieces.  An AC powerpack completed the shipment.
Operation is simple and very similar to operating a digital clock.  You hold the set button down until it flashes, then you use the up or down arrows to set the target Rh%.  The up arrow serves two other purposes: on switch for the LED strip inside the case and display of the temperature in centigrade.  I cannot figure out if there is a way to change it to fahrenheit.  Again, something I will need to learn in the future with my Chinese.  It comes with a set of two keys for locking the door.  Since the front is glass, I see little security in locking it.  The door seals well with a vinyl/magnetic strip similar to a refridgerator.  Operation is silent so I placed a humidity indicator card&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Cobalt-Free-Humidity-Indicator-Card-6-Dot-Pack-of-3/dp/B00967JR5M/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Cobalt Free Humidity Indicator Card, 6 Dot, Pack of 3</a>&nbsp;to confirm the displayed Rh.  The indicator cards change with the Rh displayed on the panel.  When it is 90% in the room, my cameras and lenses are at 38% or lower.  I am pleased and may consider buying another.