Explanatory letters No. SG 536-001/2021 RL dated 09.04.2021. on the provision of an expert report on technical issues regarding the extension of the Technical Regulations for Transportable Pressure Equipment, approved by the Resolution of the Cabinet of Ministers of Ukraine dated 04.07.2018 No. 536 for gas cylinders with a volume of 5.12, 27 and 50 liters (produced with a VB-2 or VBK-2 valve) at the request of the Ministry of Economy, ref. No. 3432-06 /20744-07 dated 05.04.2021.