post date: sep 22,2021   expiry date: mar 21,2022   detailed description: the multi-tube falling film sulfonator supplied by our company is one of the ...

  post date: sep 22,2021   expiry date: mar 21,2022   detailed description: payment method: t/t,l/c asia chemical engineering co., ltd, hangzhou, ...

  post date: sep 22,2021   expiry date: mar 21,2022   detailed description: features (apsm): 1) active poly sodium metasilicate, which is an effective and ...

  post date: sep 22,2021   expiry date: mar 21,2022   detailed description: payment method: t/t,l/c asia chemical engineering co., ltd is a high- ...