1. PNS 272:1996 (IEC 335-2-9:1993) - Toasters, grills, roasters and similar appliances - Safety of household and electrical appliances Part 2: Particular requirements for toasters, grills, roasters and similar appliances.

2. PNS 1990:2004 - Steel Sheet (Hot-dip zinc coated) - Hot-dip zinc coated carbon steel sheets.

3. PNS 1993:2004 - Steel Sheets (Continuous hot-dip aluminum zinc coated) - Continuous hot-dip aluminimum zinc-coated steel sheet.

4. PNS 09-1:2000 - Safety Matches - Part 1: Safety matches for commercial purposes - Specification.

5. PNS 1991:2002 - Pipes - Gray iron Pipes for Pressure Water Lines - Specification.

6. PNS ISO 4427:2002 ISO published 1996 - Pipes (PE) - High density polyethylene (PE) pipes for portable water supply - Specification.

7. PNS1950:2003 AMD.01:2002 - PVC-U Pipes for drain waste and vent - Plastic Piping system for soil and waste discharge (Low & High temp.) inside buildings - Unplasticized Polyvinyl Chloride (PVC-U).

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^* Text Available at Office of the National Administrative Register, U.P. Law Complex, Diliman, Quezon City.