Na May 14, ọmụmụ abụọ, "Tụnyere nke Waterproof Coil Formulations" na "Standard Development of Waterproof Asphalt Groups", mere n'uju na ụlọ ọrụ pilot asphalt mbụ nke PetroChina.Ndị a bụ ọmụmụ ihe abụọ mbụ bidoro ka ekpughere ntọala ahụ na Eprel 29.

Dị ka China Petroleum si mbụ pilot ule isi maka waterproof asphalt, mmanụ ụgbọala mmanụ ụlọ ọrụ nnyocha Institute na Jianguo Weiye Group na ndị ọzọ nkeji ga-agba mbọ na nkwalite na ngwa nke ọhụrụ waterproof asphalt ngwaahịa, imekọ ihe ọnụ mmepe nke ọhụrụ waterproof asphalt na metụtara inyeaka ngwaahịa, na mmepe nke nkà na ụzụ na nke a isi Exchange ọzụzụ, mepụta nnyocha na-arụ ọrụ na ulo oru ngwa nke waterproof asphalt ngwaahịa.Ọ ga-abụ isi mmalite maka mgbanwe nke ngwaahịa ọhụrụ na teknụzụ ọhụrụ nke PetroChina, nke dị oke mkpa maka ịkwalite nkwalite na ngwa nke ngwaahịa asphalt nke PetroChina na-adịghị mma ma na-enye ngwaahịa asphalt dị mma na nke na-adịghị mma maka ụlọ ọrụ mmiri.

Dị ka ngwaahịa dị elu na ezinụlọ asphalt, asphalt mmiri na-adịghị aghọọla ụdị asphalt kachasị ukwuu ma e wezụga asphalt okporo ụzọ.N'afọ gara aga, ire mmanụ asphalt nke China na-egbochi mmiri ruru nde tọn 1.53, yana oke ahịa karịa 21%.