Tuofeng Fused Quartz Factory guzobere, nke ndị nwe obodo.
Ntọala nke ụlọ ọrụ Feida Quartz Limited.
Kwagara Fangshan ulo oru district na wuru anyị n'ichepụta osisi na-agbanwe ụlọ ọrụ aha Lianyungang Dinglong Quartz Limited.
Gralọ ọrụ na-arụ ọrụ na-arụ ọrụ ma na-arụ ọrụ nke ọma nke ihe quartz.
Ego ndị ụlọ ọrụ na-enweta kwa afọ karịrị yuan 80.
Na-eme ka ngwaahịa anyị, ọrụ na akụrụngwa anyị na-aga n'ihu na-aga n'ihu.
Ugbu a ụlọ ọrụ na-arụpụta ihe quartz na-arụpụta, usoro, ma kesaa ọtụtụ ụdị quartz. Ndị ahịa Dinglong gbasaa Mainland China, Japan, Europe, South America, wdg.