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Ile-iṣẹ Ile-iṣẹ

1987

Tuofeng Fused Quartz Factory mulẹ, ti ohun-ini ijọba.

1997

Iṣowo ikọkọ ti o da Feida Quartz Limited.

2004

Ti gbe si agbegbe ile-iṣẹ Fangshan o si kọ ọgbin iṣelọpọ tiwa ati yi orukọ ile-iṣẹ pada si Lianyungang Dinglong Quartz Limited.

2005

Awọn ohun elo ṣiṣe igbegasoke ati ṣiṣẹ ni iṣelọpọ ti awọn ohun elo kuotisi.

2012

Owo-wiwọle lododun ti ile-iṣẹ ti kọja 80 million yuan.

2017

Ṣiṣe ilọsiwaju nigbagbogbo si awọn ọja wa, awọn iṣẹ ati awọn ile-iṣẹ pẹlu continuousdàs continuouslẹ lemọlemọfún.

2020

Nisisiyi ile-iṣẹ iṣelọpọ ohun elo kuotisi ti o ṣe agbejade, awọn ilana, ati pinpin ọpọlọpọ awọn ohun elo quartz. Awọn alabara Dinglong tan kaakiri Mainland China, Japan, Europe, South America, ati bẹbẹ lọ.

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