Whakaahuatanga Poto:

• Paerewa whakatinanatanga：GB/T4074.5-2008
• He taputapu whakamātautau tere, māmā, ā, he watea hoki tēnei e whakamahia ana hei whakamātautau i ngā kōhao iti o ngā waea enamel.
• Ka whakamahia ki ngā waea enamel katoa, kāore he herenga ki te diameter waea, ki ngā whakaritenga rānei. He māmā noa iho te mahi.
• He tika, he pumau, he pono hoki ngā hua o ana whakamātautau.