Anyway China vs. India. I don't think they would bother fighting each other except to resolve the border issue. Also China can't deploy even half of its ground force to India since the Himalayas are a natural barriers. They could come only by airforce and navy.
India is believed to have a stockpile of fissile material sufficient for fabricating several nuclear weapons and could probably assemble at least some of these weapons within a short time of deciding to do so.
India's large chemical industry produces many dual-use chemicals that could be used as precursors, and could support a chemical warfare program of considerable size.
While India possesses the infrastructure necessary to support an offensive biological warfare program, including highly qualified scientific personnel and industrial production facilities, it apparently has given priority to research and development applicable only to biological warfare defensive measures.
India has one of the more self-sufficient ballistic missile programs in the developing world. It can design and produce missiles with little foreign assistance. However, New Delhi is working to become self-sufficient in all areas of production by the end of the decade. India has two ballistic missile programs -- the Prithvi SRBM and the Agni MRBM.
The Prithvi is a single-stage, liquid-fueled missile using propulsion technology from the Soviet SA-2 surface-to-air missile, and is designed to be deployed with a payload of 1,000 kilograms to a range of 150 kilometers (or 250 kilometers with a 500-kilogram payload). The Indian Army has completed user trials with the Prithvi and started producing.
Additionally, India has had an ambitious space launch vehicle (SLV) program since the mid-1970s. The program includes three SLVs, which have payload capacities ranging from 150 to 3,000 kg. India could convert these SLVs into IRBMs or ICBMs quite easily but has shown no indications of doing so. It has already built guidance sets and warheads, key components needed to convert an SLV into a ballistic missile.
The Indian space program shares research, development, and production facilities with the ballistic missile program. Therefore, New Delhi could apply the SLV technology it has obtained from the former Soviet Union and the West to its ballistic missile programs.
In 1994, India successfully tested the two-stage Agni; the missile achieved a range of 1,000 kilometers, about half its intended range. Publicly, the Indians call the missile a "technology demonstrator," although it could be used in developing a follow-on, longer range MRBM that could reach China.
China has a mature chemical warfare capability and may well have maintained the biological warfare program it had prior to acceding to the Biological Weapons Convention in 1984. It has funded a chemical warfare program since the 1950s and has produced and weaponized a wide variety of agents. Its biological warfare program included manufacturing infectious micro-organisms and toxins. China has a wide range of delivery means available, including ballistic and cruise missiles and aircraft, and is continuing to develop systems with upgraded capabilities.
The Chinese continue to modernize their inventory of nuclear weapons systems, which now includes over a hundred warheads deployed operationally in medium range ballistic missiles (MRBMs), intermediate range ballistic missiles (IRBMs), and intercontinental ballistic missiles (ICBMs). Since becoming a nuclear weapons state in 1964, Chinese officials have declared a policy of "no first use" repeatedly, and have stated that China's nuclear arsenal is for self-defense only.
Not much info could be got about China
Source:
www.fas.org