Anyị na-agbaso ụkpụrụ bụ isi "Quality Initial, Prestige Supreme". Anyị etinyela aka n'ụzọ zuru ezu ịnye ndị na-azụ ahịa anyị ngwa ahịa dị mma dị oke ọnụ ahịa, nnyefe ngwa ngwa na nkwado ọkachamara maka China N'ogbe High Quality 4 inch RO nzacha ụlọ, Onye isi oche nke ụlọ ọrụ anyị, ya na ndị ọrụ dum, na-anabata ndị ahịa niile ka ha gaa na nzukọ anyị na nyochaa. Kwe ka anyị jikọọ aka na aka iji mepụta ogologo oge dị elu.
Anyị na-agbaso ụkpụrụ bụ isi "Quality Initial, Prestige Supreme". Anyị etinyela aka n'ụzọ zuru oke ịnye ndị na-azụ ahịa anyị ngwa ahịa dị oke ọnụ ahịa dị oke ọnụ ahịa, nnyefe ngwa ngwa na nkwado ọkachamara maka RO nzacha ụlọ, Ha na-eṅomi siri ike ma na-akwalite nke ọma n'ụwa nile. Ọ dịghị mgbe ọ bụla na-apụ n'anya isi ọrụ n'ime ngwa ngwa, ọ bụ a nwere maka gị onwe gị nke kediegwu mma mma. Na-eduzi ụkpụrụ nke "Prudence, Efficiency, Union and Innovation. ụlọ ọrụ ahụ. na-eme mgbalị magburu onwe ya iji gbasaa ahia ahia mba ụwa, bulie nzukọ ya. rofit ma bulie ọnụ ọgụgụ mbupụ ya. Anyị nwere obi ike na anyị nwere ike inwe atụmanya na-egbuke egbuke na a ga-ekesa n'ụwa nile n'afọ ndị na-abịa.
| Nlereanya | L | L1 | D | A | B |
| WTM4021-1 | 605 | 545 | φ102 | 1/2 ″ 3/4″ | 1/2 ″ |
| WTM4040-1 | 1084 | 1024 | φ102 | 1/2 ″ 3/4″ | 1/2 ″ |
| WTM4040-2 | 2100 | 2040 | φ102 | 3/4" | 1/2 ″ |
| WTM4040-3 | 3119 | 2056 | φ102 | 3/4" | 1/2 ″ |
| WTM4040-4 | 4132 | 4072 | φ102 | 3/4" | 1/2 ″ |