熔模制造厂大都采用石蜡硬脂酸模料

In the 1950s and 1960s, China began to apply investment mold precision casting to industrial production.
我国于20世纪五六十年代开始将熔模精密铸造应用于工业生产。

Compared with foreign countries, the industrial production of investment mold precision casting in China is earlier, but the development of mold mold precision casting wax is relatively lagging behind.
与国外相比，国内熔模精密铸造工业生产较早，但模料精密铸造蜡的开发相对滞后。

Before the 1990s, most of China's investment mold manufacturers used paraffin stearic acid molding material and water glass shell process to produce investment castings with low quality requirements.
90年代以前，我国熔模制造厂大都采用石蜡硬脂酸模料、水玻璃型壳工艺，生产质量要求不高的熔模铸件。

Before 2006, there were about 1,350 such precision casting plants in the country, with an annual output of 150,000 tons of castings, and about 3,750 tons of precision casting wax with paraffin stearic acid as the main component was consumed.
2006年前，全国该类精铸厂约有1350家，年产15万吨铸件，消耗以石蜡硬脂酸为主要组分的精密铸造蜡约3750吨。

In 2007, the amount of precision casting wax in some parts of China is as follows.
2007年国内部分地区精密铸造蜡用量如下。

East China: Low temperature precision casting wax market consumption is larger, in 1000 ~ 2000 tons/year, medium temperature precision casting wax consumption is about 100 ~ 300 tons/year, mainly for foreign processing castings, casting wax in Taiwan more.
华东地区：低温精密铸造蜡市场用量较大，在1000～2000吨/年左右，中温精密铸造蜡用量约100～300吨/年，主要为国外加工铸件，铸造蜡以台湾地区较多。

Northwest region: Ningxia, Xi 'an area low temperature precision casting wax consumption of about 500 ~ 800 tons/year, medium temperature precision casting wax 100 ~ 200 tons/year.
西北地区：宁夏、西安地区低温精密铸造蜡用量约500～800吨/年，中温精密铸造蜡100～200吨/年。

Among them, Ningxia Wuzhong instrument Factory and Xi 'an Aero Engine Co., Ltd. low-temperature precision casting wax modulation, medium temperature precision casting wax mainly rely on imports.
其中，宁夏吴忠仪表厂和西安航空发动机有限公司低温精密铸造蜡自己调制，中温精密铸造蜡主要靠进口。