Recently, Tongwei Testing Center passed the British FAPAS proficiency testing of lead, cadmium, mercury, and total arsenic in soybean powder. A total of 112 laboratories globally participated in the testing, with 98 submitted final results.

According to the report, the result of TWTC for the four microelements is satisfactory, with the value being very close to the  FAPAS published  median︱ Z ︱ <0.2 ( ︱ Z︱ ≤ 2 ). This marks that Tongwei has reached international level in heavy metal and microelement analysis.