National Voluntary Laboratory Accreditation Program (NVLAP) was set by American officials according to clauses of Section 285 of Item 15 of Code of Federal Regulations (CFR). Its authorization is under management of National Institute of Standards and Technology (NIST) of Federal Department of Commerce and Trade. NVLAP is a National Laboratory Accreditation Body which is responsible for testing and calibration laboratory accreditation work.

In May 2013, National Quality Supervision & Inspection Centre of Hoisting and Metallurgical & Explosion-Proof Electric Machine (CHEM) / Jiamusi Explosion-proof Electric Machine Institute Co. Ltd. (JExM) submitted application to NVLAP formally.

From August 26^th 2014 to August 28^th, CHEM/JEXM succeeded in passing 3-day on-site assessment. September 30^th, NVLAP formally issued accreditation certificate to  CHEM/JEXM, testing capability range is Test Procedure for Polyphase Induction Motors and Generators (for accreditation purposes, equivalent to CSA C390), 1 hp to 500 hp, Lab Code 200986-0.

From 2015 to 2021,  CHEM/JEXM passed certificate change applications successfully. Among them, 2016 and 2018 are on-site reviews; From 2020, on-site reviews were conducted remotely because of the influence of COVID-19 pandemic. During the process of qualification continuation, the laboratory testing ability is also constantly improved.

Electric motors having the efficiency test report issued by NVLAP accreditation laboratory is the prerequisite for entering American market. After CHEM / JExM obtaining the NVLAP accreditation, it has international recognized third-party testing capability, which can provide more convenient channels for the motors produced by domestic and foreign manufacturers to enter the North American market.