论文部分内容阅读
优质栲胶原料供不应求,已成为栲胶工业发展的主要障碍。据统计,我国栲胶最高年产量的1981年达40,159吨,尚缺凝缩类栲胶1.45万吨;1982年我国栲胶需求量为5万吨,其中进口1.2万吨(进口价每吨约700美元)。目前,国内栲胶生产主要有五种原料:落叶松皮、红根皮、杨梅皮、柚柑皮、橡椀,其中以凝缩类的红根皮、杨梅皮、柚柑皮栲胶较受消费者欢
High-quality plastic material in short supply, has become a major obstacle to the development of plastic industry. According to statistics, the highest annual output of plastic tannin in our country reached 40,159 tons in 1981, still lacking 14,500 tons of condensed rubber. In 1982, the demand for plastic tannin was 50,000 tons, of which 12,000 tons were imported (import price per ton $ 700). At present, there are mainly five kinds of raw materials for the production of tamarind gum in China: larch bark, red root bark, bayberry bark, pomelo citrus bark, and rubber bowls, among which the root barks of condensed red root bark, bayberry bark and pomelo citrus bark are more affected Consumer joy