Aside from political reasons, the US$10 million plus unit price tag of TPQ-37 (including after sale logistic support) was simply too costly for Chinese.
Type 704A radar is designed to overcome this shortcoming by improving the capability against rounds with flat trajectory.
At the 9th Zhuhai Airshow held in November 2012, a new, lightweight, counterbattery radar designated as CS/RB1 made its public debut.
[1] Like Type 704 and BL904 radars, CS/RB1 is also designed primarily for detecting incoming projectiles down to the size of mortar round, though larger objects can be tracked as well.
206 of China Arms Industry Group Corporation), Xi'an, December, 1999, ISSN 1008-8652，Domestic Chinese SN: CN 61-1214/TJ.
206 of China Arms Industry Group Corporation), Xi'an, February, 1995, ISSN 1008-8652，Domestic Chinese SN: CN 61-1214/TJ.