Wannan masana'anta na gargajiya, wanda aka sani don daidaitaccen saƙar kwando 2 x 2, sauƙin ƙira, juzu'in aikace-aikacen, da aiki.Zaɓuɓɓukan buɗewa da yawa (1%/3%/5%/10%) da launuka suna ba da dama don daidaita maƙasudin ƙira da yawa kamar keɓantawa, hasken rana, da ta'aziyyar zafi.