Feb. 1965, set up Yiyang Smelting Chemical Plant .
Dec.1965, newly built a 6m² antimony trioxide furnace & its hop-pocket dust-receiving system .
 Feb. 1967, the vertical well burned furnace had been developed to four holes within one line & newly built a 6m² reverberator furnace & its hop-pocket dust-receiving system.
 Dec. 1969, the reverberator furnace had been developed to be 10m².
 Mar. 1972, newly built a 0.7m² blast furnace & its condensing dust-receiving system.
 Jan. 1973, established the antimony workshop & machine workshop.
 May, 1973, newly built the second 10m²reverberator furnace & its dust-receiving system.
 Sep. 1973, export antimony trioxide outside China at the first time.
 Dec. 1980, newly built the second 0.7m² blast furnace of which furnace campaign firstly broke hundred days reaching107 days
Sep. 1982, the Special # Antimony Trioxide was awarded "Quality Product Certificate" by Ministry of Metallurgical Industry

Dec.1983, the Special # Antimony Trioxide was awarded "Excellent Product Quality Certificate "by Ministry of Foreign Trade and Economic Cooperation
May. 1985,"Huachang Brand "had been approved by the State Administration for Industry and Commerce as our registered brand for antimony trioxide product.

Oct. 1985, newly built the second 6m²antimony trioxide furnace.
 July.1986, the "Third-level Measuring Qualified Certificate"was issued to us by the Provincial Measurement Bureau.
 May. 1988, got "The secondary Measurement Qualified Certificate".
 June.1988, different particle sizes of antimony trioxide products had passed the Provincial-level Technical Expertise .
Nov. 1988, was awarded "Quality Control Prize of Hunan Province".
July. 1989, got the title of "Provincial-level Advanced Enterprise of Hunan Province".
 Aug. 1989, got the titles of " Provincial Second-level Standardized Enterprise" & "National Second-level Standardized Enterprise".
 Jan. 1990, got the title of "Provincial File Management Advanced Enterprise in Hunan Province". 21. May.1990, got the qualified "second-level enterprise" after counter-check.
Dec. 1990, the high efficiency flame retardant antimony trioxide (the products with different particle sizes) got the title of " Provincial High Quality Product".
 Apr. 1991, the company was awarded "Excellent Management Enterprise Prize" by Non-Ferrous Metal Industry Corp of China.(Viz Golden Eagle Award).
 Oct. 1991, the company was awarded "Excellent Enterprise Management Prize of Hunan Province".

Sep. 1992, set up Yiyang Antimony Waterproofing& Heat-insulation Powder Plant.
Oct. 1992, built the Yiguang Smelting Plant associated with Liancheng Town, Guangnan County, Yunan Province.
 Dec. 1993, set up a smelting branch factory in Dushan City, Guizhou Province.
 May, 1994, set up Shanghai Management Department.
Feb. 1995, set up Guangzhou Management Department.
May, 1996, established branch offices in Beijing, Yuyao &Jinan.
June. 1996, the company rose to"National Secondary Enterprise".
 Dec. 1996, the newly-built "Three Special" antimony trioxide production line had been finished & put into production.
Jan. 1997, restructuring of enterprise as "Hunan Huachang Antimony Industry Ltd".
Dec. 1997, the company had passed the ISO Quality System Certificate ,got free import-export authority , "Huachang "brand was evaluated as one of the famous trade marks in Hunan Province.
Dec. 1998, the company was awarded the title of "Outstanding Enterprise of Hunan Province" by Hunan people's Government.
36. Apr. 1999, the nanometer-level antimony trioxide, developed together with the Chinese Academy of Science Chemistry Metallurgy Research Institute, had succeeded in trial-production.
 Oct. 1999, succeeded in trying to smelt crisp embritite by fining blast furnace.
 Jan. 2000, the high efficiency antimony trioxide (catalytic antimony trioxide) product line had been put into production with an annual capacity of 2,500Mt.

Apr. 2000, six 5m² oxiden furnaces dealing with lead antimony alloy had been put into production.
un. 2000, the silver converter furnace had put into production. with capacity of 10Mt/Annual.
Oct. 2000, the lead electrolysis workshop had been completed & put into production.
In 2001, according to the standards of ISO 9001: 2000, the company improved the quality management system & operated in accordance with the standards in new edition & the company quality control system document.
 In 2002, the company carried on the standard transformation of ISO 9001: 2000 & the quality system authentication.
In 2003, the company was awarded as "Quality Credit-worthy Enterprise" .
Apr. 2004, set up the Hong Kong Huachang Antimony Chemical Co., Ltd which gives the priority of import and export business.
Jul. 2004, the Ouya MasterBatch Manufacturer was built by the way of joint-venture and cooperation.
Nov. 2004, the joint-venture and cooperation between Changde Mining Co.,Ltd, Guohui Antimony Factory and Huachang Shengli Chemical Factory was successful.
At the end of 2004, Hunan Huachang Antimony Industry Ltd primary strypped-down.
Feb. 2005, set up Yiyang Huachang Antimony Co.,Ltd and continued export supplier qualification.
 Nov. 2005, the environmental-protection, flame retardant antimony trioxide produced by Yiyang Huachang Antimony Co., Ltd had passed the High-tech products & High-tech Enterprise Authenticates of Hunan Province.