新的革新技术提高了效益，橡胶产量每2年翻一番，在那里生产橡胶的成本只是巴西采集野生橡胶的成本的很小一部分。
New innovations increased efficiency and production doubled every two years. Rubber could be produced at only a fraction of the cost of collecting wild rubber in Brazil.
弹性密封件。给水排水用管道连接密封件的材料要求。第3部分：硫化橡胶多孔材料。
Elastomeric seals - material requirements for joint seals used in water and drainage applications - Part 3: cellular materials of vulcanized rubber.
橡胶和塑料机械。反应铸模机械。第1部分：计量和混合元件的安全要求。
Rubber and plastics machines. reaction moulding machines. part 1: safety requirements for metering and mixing units.
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