汉译英，在线等~

感觉上基本没问题，以下是我自己的改良：
Our company is a professional enterprise which have passed the quality management system authentication, we also have a 20-year experience of R&D,production and sales of instant medical articles,high molecular material and silion rubber products.

我们公司是一家专业企业,有完善的质量管理体系认证。我们有经验的研发、生产和销售为一体的一次性医疗用品、高分子材料、贴橡胶制品已有20年。

Our company is a professional enterprise which has passed the authentication under the quality management system_We have R&D experience,production and sale of single use medical products,high molecular materials and silion rubber products for 10 over years.