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No.11, You 9th Rd., Dajia Dist., Taichung City 437, Taiwan
Tel: 886-4-26816566
Fax: 886-4-26815279
1985
Proval Ind. Co. was established in 1985.main products are 1 PC ball valve and 2 PC ball valve
1987
production factory was established in No. 11 Youth Chiu Rd. Ta-chia Town, Taichung county, Taiwan
1988
market has extended to Europe, Middle East, Austria, Africa etc.
1988
established the first factory in Taiwan that produced, processed in CNC machines, and assembled ball valves with investment casting by low wax
1993
became the first foundry company in Tai...more
Main products
主要產品:一片式,兩片式,三片式,四片式(三通),及五片式(四通/三通)牙口.法蘭球塞閥
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