Isicelo somkhiqizo:
Isetshenziswa emanzini abandayo ezimbonini nasemphakathini, emanzini ashisayo, ekushiseni, kumasistimu amapayipi egesi ashisayo, isistimu yokulwa nomlilo amapayipi elanga namapayipi okusetshenziswa amaphakathi, njll.
Ukuthobela okujwayelekile:
| I-GB/T 19228 YB/T 4204 |
| I-GB/T 12771 QB/T 2467 |
| I-JIS G3448 |
| I-EN 10312-3S |
