1. In this system, the water-washed niobic acid, acid-washed niobic acid and niobic acid for phosphoric acid-treated were studied.

2. After water-washed, the rubberized fabric is cured directly on a trolley in an autoclave.

3. The siliceous earth is acid-washed, then water-washed until neutral, but not base-washed.

4. Waterborne diseases are not usually as serious or widespread as water-washed diseases such as skin and eye infections, which result from insufficient water for personal hygiene.

5. What type of products will zipper be used for, such as leather case, shoes and boots, ski suit, raincoats, tent, water-washed jeans or leather articles, with strong acid or other special requirements.

6. Natural art stone in Shaanxi Province can be divided into different categories, such as jade, pebble, water-washed and fossilized stones.