The document discusses a self-loading concrete mixer that was produced in January 2016 and has been used for 1700 hours until April 2017. It describes how the unit was tested during the hottest summer months in Uzbekistan, with temperatures above 44 degrees, to evaluate the machine's cooling performance under extreme heat. Over 10-12 hours each day, the concrete mixer demonstrated good cooling quality by continuing to run effectively as the hydraulic oil temperature remained below 90 degrees.

1. Summer Degree 40°very hot
We were focusing on production of self-loading concrete mixer 5
years ago, and learn users request and workers demand. Our boss and
engineers often went to project jobsites and learn the units working
situation.
The follow unit of ADDFORCE LT3500 was produced in Jan.2016,
PO01, it has been worked with 1700 hours until April, 2017

3. The unit boss is a contractor in Uzbekistan ,its famous old city as
follow

4. The following picture showing time is August,2016. It is the hottest
time at local above 44 degree. Most workers no wearing shoes to work
The ADDFORCE LT3500 working with 10-12hours each day at that
hot summer. It is the best time to test Machine performance- Cooling is
the biggest test, if the performance is not good, work less than 30
minutes hydraulic oil temperature up to more than 90 degrees, must
stop cooling.
We fully learn the demand of temperature and condition, and our
units hydraulic system experienced long-term running and good quality.

11. before our units , their worker made concrete in jobsite