( 2 ) In order to allow the installation mistake, whether it is one-way or two-way, you can choose spherical self-aligning round seat type or round seat type
● Iji nye ohere maka itinye njehie, otu ụzọ ma ọ bụ ụzọ abụọ, ị nwere ike ịhọrọ ụdị ọbụ aka kwụ ọtọ ma ọ bụ nke nwere ụdị mgbanaka oche