The following items are judged to be "with difficulties", and we recommend not to be prizes subject to purchase. Luminescence · · · Very weak, doubtful about safety. Shape · · · There is a deformation of the product which seems to be "cause due to packaging or storage method" at the time of product arrival, there is a portion which can not be bonded because it adheres to the stairs even when installed. In brief explanation, goods curved and deformed by heat or pressure. It can not be installed normally. However, the deformation was before shipping from the Monotaro. It can be recognized sufficiently at the time of shipment that it was such a defective item. It is also doubtful about the product management ability of monotaro.