Can Shenzhen Disabled Friends Group be trusted?

Credible. According to official website's inquiry, Shenzhen Friends of the Disabled Group, which is certified by relevant departments, is formal and therefore credible. Shenzhen is a prefecture-level city under the jurisdiction of Guangdong Province, a sub-provincial city of Guangdong Province, a city with separate plans, a megacity, a China Special Economic Zone approved by the State Council, a national economic center city, an international city, a scientific and technological innovation center, a regional financial center and a trade and logistics center.