Pull Handle,High Quality Pull Handle,Pull Handle Details, Sunzhengde Hardware Mfg Co., Ltd. Sunzhengde Hardware Mfg Co., Ltd. , https://www.sunzhengde.comThis standard specifies 17 2,3,7,8-substituted polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and 12 dioxin-like polychlorides in food Methods for determination of biphenyl (DL-PCBs) content and TEQ toxicity equivalent (TEQ). This standard applies to 17 kinds of 2,3,7,8-substituted polychlorinated dibenzodioxins and polychlorinated dibenzofurans (PCDD / Fs) in foods specified in Table A.1 of Appendix A Determination of 12 kinds of DL-PCBs and their TEQ.