We produce high quality gold umbrella, 30 windproof golf umbrella, fiberglass frame, pongee double canopies, EVA handle.
我们生产高质量的黄金伞,30“防风高尔夫伞,玻璃纤维内,茧绸双檐篷,长荣处理。
This article studied migration, dispersing and achromatic property of salt-resistance levelling agent TF-212B on polyester pongee under the existence of sodium sulphate.