Plain paper containing residual lignin is extremely susceptible to aging by corrosion of acidic gases, and even high-quality paper will age and deteriorate decades later. Oji Paper Co. uses a special drug to bleach the pulp twice, greatly reducing the amount of lignin left, thereby preventing paper aging and improving the whiteness of the paper.
Writing or printing academic papers, almanacs, dictionaries, etc. with this new paper can basically be preserved for thousands of years without fading or yellowing.
Writing or printing academic papers, almanacs, dictionaries, etc. with this new paper can basically be preserved for thousands of years without fading or yellowing.
Cast iron bathtub with skirt is popular. The skirt can be steel or stainless steel. The package of skirted cast iron tubs is wooden crate. 1 tub in 1 crate. Skirted cast iron bathtubs have good heat preservation and they're easy to clean.
Bathtub With Skirt,Skirted Tub,Skirted Freestanding Tub,Freestanding Bath With Skirt
Anping Sunshine Sanitary Ware Co., Ltd. , https://www.sunshinebathtub.com