Lithuania iso 20ft shipping container frames modular for sale

the client in lithuania ordered 6 units W3M*L5.95M*H2.8M container frame to check our quality.once installed ,he is very satisfied.below is the picture of installed 20ft container frames modular

in august,2019,he ordered 20 units container frames to load in one 20ft shipping container,some frames are white color,some frames are green color.the frame will be shipped out on 19th august.below are some pictures of the frames

want to know how to install iso 20ft shipping container frames modular?check below video