GB/T 6672-2001 Plastics Film and Sheeting-Determination of Thickness by Mechanical Scanning This Standard is a revision of Plastics film and sheeting - Determination of thickness by mechanical scanning (GB/T 6672-1986). The preparation of this standard was entrusted by Plastics film and sheeting - Determination of thickness by mechanical scanning (ISO 4593:1993). In addition to some editorial changes, the technical content and writing method is identical with ISO 4593:1993.

GB 9691-1988 Hygienic Standard for Polyethylene Resin Used as Food Packaging Material This regulation stipulates the hygienic standards for polyethylene resin used as food packaging material. This regulation is applicable to the manufacture of polyethylene resin for food containers, food packaging materials and food industrial uses.

GB/T 21302-2007 General Rules of Laminated Films & Pouches for Packaging This regulation is proposed by China national light industry council. This regulation is centralized to the National Technical Committee on Plastic Products of Standardization Administration of China.

GB/T 6673-2001 Determination of Length and Width of Plastics Film and Sheeting This Standard is a revision of Determination of length and width of plastics film and sheeting (GB/T 6673-1986). The preparation of this standard was entrusted by Determination of length and width of plastics film and sheeting (ISO 4592:1993). In addition to some editorial changes, the technical content and writing method is identical with ISO4592:1992.

GB/T 4456-2008 Polyethylene Blown Film for Packaging Applications This regulation refers to ASTM D 4635-2008 Standard Specification for Polyethylene Films Made from Low-Density Polyethylene for General Use and Packaging Applications and ASTM D 3981 -2003 Standard Specification for Polyethylene Films Made from Medium-Density Polyethylene for General Use and Packaging Applications. This regulation is a replacement of GB/T 4456-1996 Polyethylene blown film for packaging and GB/T 12025-1989 High density polyethylene blown film.