Shenyang Tiantong Electric Co., Ltd bụ China kasị ukwuu na kasị ike emeputa nke fin radiators maka transformers.N'ime oru ngo a, a na-ejikarị mita pH anyị na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ iji nyochaa uru pH ma hụ na uru pH dị gburugburu 4.5-5.5, ka e wee nweta plating kwụsiri ike na ntinye zinc.
