| 1. | Ammonia has been one of the more difficult basic chemicals to synthesize .
氨曾是一个较难合成的基本化工原料。 |
| 2. | Painting production ; operating chemical raw materials
油漆生产；经营化工原料。 |
| 3. | Ling off ammonium bicarbonate , yean , chemical raw materials
灵产碳酸氢铵、液氨、化工原料。 |
| 4. | Main application : it is the basic raw material for chemical industry
产品主要用途：基本化工原料。 |
| 5. | Melamine is an industrial chemical
三聚氰胺是一种化工原料。 |
| 6. | We note from your e - mail that you are in the market for chemicals
从来信中获悉你方现在觅购化工原料。 |
| 7. | Raw materials company of chemical industry
化工原料公司 |
| 8. | Propylene oxide is important material of organic chemistry industry
环氧丙烷是一种重要的有机化工原料。 |
| 9. | Material classification and code for chemical engineering raw material and agent
化工原料及试剂物资分类与代码 |
| 10. | Retail : uppers chemical raw materials ( excluding hazardous chemicals )
零售：鞋面化工原料（不含化学危险品） 。 |
