Kamfanin Tianjin Zhongfa Valve Co., Ltd. An kafa shi a shekarar 2006, wani kamfanin kera bawul a Tianjin, China. Ya fi samar da bawul ɗin malam buɗe ido, bawul ɗin ƙofa, bawul ɗin duba, bawul ɗin ƙofar wuka da sauransu.
Bawuloli namu sun dace da ƙa'idodin bawuloli na duniya na ASTM, ANSI, ISO, BS, DIN, GOST, JIS, KS da sauransu. Girman DN40-DN1200, matsin lamba na asali: 0.1Mpa~2.0Mpa, zafin jiki mai dacewa: -30℃ zuwa 200℃. Kayayyakin sun dace da iskar gas mara lalata da lalata, ruwa, rabin ruwa, mai ƙarfi, foda da sauran matsakaici a cikin HVAC, sarrafa wuta, aikin kiyaye ruwa, samar da ruwa da magudanar ruwa a birane, foda na lantarki, man fetur, masana'antar sinadarai, da sauransu.