我所试制成功的冷杉胶在国内光学、医疗、地质等单位,经过多年使用,认为产品性能良好,质量超过加拿大胶。外销时提出,冷杉胶唯一缺点是使用时有臭味,针对这一问题我们发动群众进行了多次试验,经过筛选评定确定V_1、L、VL三个型号较好。鉴定结果认为,理化指标未变,硬度和清洁度符合要求,原有 My successful trial of fir glue in the domestic optical, medical, geological and other units, after years of use, that the product performance is good, the quality of more than Canada plastic. Export proposed that the only drawback is that the use of Fir gum is odor when used, we mobilize the masses to conduct a number of tests against this issue, after screening to determine the V_1, L, VL three models better. According to the appraisal results, the physical and chemical indexes have not changed, and the hardness and cleanliness meet the requirements