1. Ejila mgbagha mebiri emebi

2, mgbe ị na-ebuli elu, agbagọla, mgbagha

3, ekwela ka eriri rigging

4, iji zere ịdọka commissure ịkwa akwa ma ọ bụ bufee ọrụ

5, mgbe ị na-akwagharị rigging, adọkpụrụla ya

6, iji zere ibu siri ike ma ọ bụ ujo

7, a ga-enyocha rig ọ bụla tupu ojiji ọ bụla

8, Polyester bụ eguzogide ọgwụ inorganic acid, ma ọ bụ ngwangwa organic asịd.

9. Polypropylene dị mma maka iji mee ihe na ebe ndị na-eguzogide ọgwụ

10, naịlọn nwere ikike iguzogide acid inorganic, adịghị ike imebi acid organic

11. Mgbe naịlọn dị mmiri, ọ nwere ike tufuo ruo 15%