...我难过都不在意,真我还放不下的你 ? I am sorry, you don't mind that I also do not really of your 催化剂剂 ? Catalyst agent 请围绕你们的英语学习写一篇短文 ? Around your English learning to write an essay ..
The product consists of synthetic resin, filling and catalystagent. It has characteristics of water-resistant, ageing-proof, corrosion-resistant, high tensile strength and convenient to construction.