The Institute for the Control of Agrochemicals, Ministry of Agriculture (ICAMA) was established in 1963 as an institution affiliated with the Ministry of Agriculture (MOA). ICAMA, as mandated by MOA, specializes in nation wide pesticide registration and administration with the main responsibilities for registration, quality control, bioassay and residue monitoring of pesticides, supervision of pesticide markets, information-sharing, international cooperation and other services. You may visit the website http://www.chinapesticide.org.cn/. 
We have managed to reprocess the registration data(till 2021.12) as per the Chinese version of the website and list below the TOP100 active ingredients(holding the most registrations) as Agrochemicals in China. Please let us know if you have any doubts. If you need the full list, please mail us sales@vcommend.com. 
 

Rank	Product Name	Total
1	Glyphosate	132
2	Pyraclostrobin	78
3	Imidacloprid	74
4	Azoxystrobin	73
5	Chlorpyrifos	72
6	Thiamethoxam	62
7	Glufosinate ammonium	61
8	Nicosulfuron	55
9	Penoxsulam	54
10	Tebuconazole	49
11	Acetamiprid	49
12	Dicamba	48
13	Propiconazol	45
14	Lambda-cyhalothrin	44
15	Pymetrozine	38
16	Mesotrione	37
17	Difenoconazole	35
18	Cyhalofop-butyl	32
19	Fluroxypyr-meptyl	31
20	Acetochlor	30
21	Bifenthrin	30
22	Boscalid	30
23	Cypermethrin	30
24	Tribenuron-methyl	29
25	Mancozeb	29
26	Spirodiclofen	28
27	Pendimethalin	27
28	Clethodim	27
29	Emamectin Benzoate	27
30	Bispyribac-sodium	27
31	Fludioxonil	26
32	2,4-D	26
33	Haloxyfop-P	26
34	Atrazine	26
35	abamectin	26
36	Lufenuron	25
37	Larvin	25
38	Dinotefuran	25
39	Florasulam	25
40	Clomazone	25
41	S-metolachlor	24
42	Quizalofop-P-ethyl	24
43	Trifloxystrobin	24
44	Fomesafen	24
45	Clodinafop-propargyl	24
46	Bentazone	23
47	Acephate	23
48	Butachlor	23
49	Beta-cypermethrin	23
50	Thifluzamide	22
51	Dimethomorph	22
52	Buprofezin	22
53	Epoxiconazol	22
54	Metribuzin	21
55	Carbendazim	21
56	Fipronil	21
57	Trifluralin	20
58	Oxadiazon	20
59	Flumioxazin	20
60	Thiophanate-Methyl	19
61	Prochloraz	19
62	Pretilachlor	19
63	Fluazinam	19
64	Diflubenzuron	19
65	Pyriproxyfen	18
66	Oxyfluorfen	18
67	MCPA	18
68	Metolachlor	18
69	Carfentrazone-ethyl	18
70	Tricyclazole	17
71	Nitenpyram	17
72	Malathion	17
73	Methoxyfenozide	17
74	Permethrin	17
75	Ethephon	17
76	Chlorothalonil	17
77	Triazophos	16
78	Imazethapyr	16
79	Paclobutrazol	16
80	Picloram	16
81	Spirotetramat	16
82	Fenoxaprop-P-ethyl	16
83	Gibberellic acid	16
84	Monosultap	15
85	Tebufenozide	15
86	Quinclorac	15
87	Profenofos	15
88	Phoxim	15
89	Bensulfuron-methyl	15
90	Alpha-cypermethrin	15
91	Cartap	15
92	Clopyralid	15
93	Pyrimethanil	14
94	Propargite	14
95	Thiabendazole	14
96	Hexazinone	14
97	Fenvalerate	14
98	Imazamox	13
99	Pyrazosulfuron-ethyl	13
100	Metalaxyl	13