china only got surpass around the 1800's. even then china still had water tight compartments for ships. deep salt mine drilling by product is natural gas didn't catch up till early 1900's. gliding tech and parachute made in china thousands of years before, mainly use for entertainment.
hell even the modern helicopter blades was based on a chinese childerns toy. don't get me started on how the west always Leonardo this and that. his stuff wasn't practical. hot air balloon isn't a french invention base on another Chinese toy.
china had a coal industy for a thousand years, it was use for making steel and other things.
when the british paddle boats invaded china they thought the chinese copy them pretty quickly even though the paddle boats been in use for battle for another thousand years in china.
the match china had that for over thousand years only around 1800's europe had it.
toilet paper for emperors use or very rich guy.
water skimming rocket for destroying ships. landmines, flame thrower, someone other than me look up the dates for those things.
this is just top of my head, there is more.
the problem with china is when the west finally meet china, chinese emperors destroy the sea fearing abilities of the nation. most people think of Chinese ships are flat bottomed, but the Ming emperors did that, they destroy the building of any ocean going ships. when the Europeans came they only had flat bottom river boats. china had a navy that was unsurpassed from the song dynasty and up till the ming. rudder and compass made in china. a very good western book called "when china rule the seas" documents some of the sailing ships through the centuries up to the ming fleet.