Ma ka lā 14 o Mei, ua hoʻokō piha ʻia ʻelua mau haʻawina, ʻo "Comparison of Waterproof Coil Formulations" a me "Standard Development of Waterproof Asphalt Groups", ma ka hale hana hoʻāʻo asphalt wai mua loa o PetroChina.ʻO kēia nā haʻawina mua ʻelua i hoʻomaka ʻia ma hope o ka wehe ʻia ʻana o ke kahua ma ʻApelila 29.

Ma ke ʻano he kahua hoʻāʻo hoʻāʻo mua loa o China Petroleum no ka ʻasphalt wai ʻole, e kūpaʻa ka ʻoihana noiʻi ʻaila wahie a me Jianguo Weiye Group a me nā ʻāpana ʻē aʻe i ka hoʻolaha a me ka hoʻohana ʻana i nā huahana ʻasphalt wai ʻole hou, ka hoʻomohala like ʻana o ka ʻasphalt wai ʻole hou a me nā huahana kōkua e pili ana, a me ka hoʻomohala ʻana i ka ʻenehana ma kēia kahua hoʻomaʻamaʻa Exchange, e hana i nā hana noiʻi ma ka hoʻohana ʻoihana o nā huahana ʻasphalt wai ʻole.E lilo ia i kahua hoʻouluulu no ka hoʻololi ʻana o nā huahana hou a me nā ʻenehana hou o PetroChina, he mea nui loa ia no ka wikiwiki ʻana i ka hoʻolaha ʻana a me ka hoʻohana ʻana i nā huahana asphalt wai ʻole o PetroChina a me ka hoʻolako ʻana i nā huahana asphalt wai ʻole ʻoi aku ka maikaʻi a me ka hoʻokele waiwai no ka ʻoihana wai ʻole.

Ma ke ʻano he huahana kiʻekiʻe loa i ka ʻohana asphalt, ua lilo ka asphalt pale wai i ʻano asphalt nui loa koe wale nō ka asphalt alanui.I ka makahiki i hala, ua hōʻea ke kūʻai aku ʻana o ka ʻasphalt pale wai o Kina i 1.53 miliona tons, me kahi māhele mākeke ma mua o 21%.