If the bidding materials are not installed immediately after they arrive at the construction site, they need to be stored in the warehouse, not in the open air. \x0d\ 1。 The warehouse should be dry and well ventilated to avoid sun and rain; \x0d\2。 Coils of different types and specifications shall be stacked separately, and shall not be inclined or cross-pressed; \x0d\3。 Coil should be flat, stacking height shall not exceed five layers; \ x0d \ 4。 The storage temperature should not be higher than 25℃.