A manufacturing process of high performance coated sand phenolic resin was introduced.
A manufacturing process of high performance coated sand phenolic resin was introduced.
摘要介绍了一种高性能覆膜砂用酚醛树脂的制作工艺。
A manufacturing process of high performance coated sand phenolic resin was introduced.
摘要介绍了一种高性能覆膜砂用酚醛树脂的制作工艺。