Yes, the Chinese had a variety of AFVs from various sources including the Pz.I. But not many of any AFVs overall especially before and during the early days of WWII.
The IJFs it appears wisely used any of the Pz.Is they captured from the Chinese. The Pz.I was as good or better than most of IJFs' AFVs. And most of the time the Chinese forces were light and/or peasant infantry. The twin .30 cal MGs on the Pz.Is would be very useful in that regard.
Vehicles : Tankettes -
V-C-L Tankette Mk VI (24 were bought and delivered from the United Kingdom between 1929 and 1930)
Renault UE (10 were bought and delivered from France between 1936 and 1937)
CV-35 (101 were bought and delivered from Italy between 1937 and 1938)
Type 94 tankette (18 were supplied to the Collaborationist Chinese Army in 1941
Universal Carrier (1,100 in the machine gun version and 400 with 3-inch mortar to the X Force in the Burma Campaign in 1943, but only used for training and never saw combat)
Tanks:
Renault FT (36 in total are reported, with 14 being bought between 1924 and 1925 and the rest having been captured by Zhang Zuolin after France withdrew from the Russian Civil War in 1920)
V-C-L Light Amphibious Tank (29 were bought and delivered from the United Kingdom between 1933 and 1935)
Vickers Mark E Type B (20 were bought and delivered from the United Kingdom between 1934 and 1936)
Panzer I (15 were bought and delivered from Germany between 1936 and 1937)
Renault ZB (16 were bought and delivered from France between 1936 and 1940)
T-26 (82 were supplied in the Soviet Aid Program in 1938)
BT-5 (4 were supplied in the Soviet Aid Program in 1938)
M3 Stuart (536 shipped as part of US Lend-Lease, but only 100 used in the Burma Campaign by the X Force between 1943 and 1945)
M4 Sherman (116 provided by the United Kingdom to the X Force in the Burma Campaign in 1944)
Armored cars -
Leichter Panzerspähwagen (15 in total between 1936 and 1937, mostly Sd.Kfz. 222, two Sd.Kfz. 221 and at least one Sd.Kfz 260)
M3A1 White Scout (36 were supplied in the American Lend-Lease program in 1941)
BA-10 (owned by Manchukuo), BA-3/6 and BA-27 (owned by KMT)