A Palestinian employee works at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

A Palestinian employee works at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

Palestinian employees work at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

A Palestinian employee walks inside a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

A Palestinian employee works at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

A Palestinian employee works at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)

Palestinian employees work at a tomato paste factory at the Jabalia refugee camp in the northern Gaza Strip, June 24, 2019. (Xinhua/Stringer)