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2 ngwugwu 17 inch winding mkpanaka maka Torsion Springs, 0.5inch dayameta igwe ikuku ikuku maka imezi ma ọ bụ dochie ọdụ ụgbọ mmiri ọdụ ụgbọ mmiri na aka rọba
The ụzọ nke torsion mmiri winding mkpara na-kpọmkwem e mere maka ịba ụba (ikuku) na ibelata (na-ebelata) esemokwu na residential ebe ụgbọala ọnụ ụzọ torsion iyi.